Compounds that contain hydrogen, oxygen, at least one other element, and have acidic properties are known as: oxyacids. Consider the normalized Maxwell velocity distribution given by: f(v) =4n 2tk,T 3kT a) Show that the average square velocity using this distribution is U b) Use the result from part a t0 calculate the root-mean-speed for Hydrogen gas molecule; Hz on earth, where earth s average surface temperature is 288 K molar mass for Hydrogen is 1.0 gmlmol, Repeat the same calculalion in b for Oz molecule . iron (III) sulfide iron (II) sulfide. Magnesium oxide (MgO) is a base and not an acid. Use uppercase for the first character in the element and lowercase for the second character. This compound can be formed from the reaction of Mg(OH)2 (a strong base) and HCl (a strong acid). As a result, magnesium supplements can be taken at any time of day as long as you take them consistently. Examples: Fe, Au, Co, Br, C, O, N, F. Replace immutable groups in compounds to avoid ambiguity. What is the name of the binary acid . The reaction of Magnesium metal and Iodine will 'yield' Magnesium Iodide. Graduated from ENSAT (national agronomic school of Toulouse) in plant sciences in 2018, I pursued a CIFRE doctorate under contract with SunAgri and INRAE in Avignon between 2019 and 2022. The attraction between oppositely charged ions is known as an ionic bond. Mg (NO 3) 2 + 2 KI = MgI 2 + 2 KNO 3 See Steps to Balance Mg (NO3)2 + KI = MgI2 + KNO3 Solubility Equation Because among the halogens the electronegativity is more for Fluorine followed by Chlorine, Bromine, Dodine. 4. KCl potassium chloride. Sodium chloride, which is obtained by neutralization of hydrochloric acid and sodium hydroxide, is a neutral salt. . Misconception Alert Some students like to use the criss-cross method. - Magnesium and Iodine form a ionic bond (MgI2). between 6 to 7 Answer: It is in between 6 to 7 or neutral. Ionic and Covalent Compounds Name: KEY!! Label the polar bonds in each molecule, and then decide if the molecule is polar or nonpolar. The salts of strong acid and weak base give acidic solutions . Overdose. View 10 - Ionic and Molecular Compounds.pdf from SCIENCE SNC 2D1 at Marc Garneau Collegiate Institute. Ionic bond in MgI2. https://en.wikipedia.org/wiki/Covalent_bond. Magnesium chloride is slightly acidic because it is formed by the reaction of a relatively weak base. Thus NaF is more ionic. MgI2: oxygen dichloride: OCl2: dihydrogen monosulfide: H2S: beryllium oxide: BeO: Iron (III) sulfate: Fe2(SO4)3: Copper (I)oxide: Cu2O: Nickel II . 2 K (s) + Mg 2+ (aq) + 2 I-(aq) = 2 K + (aq) + 2 I-(aq) + Mg (s) Net Ionic Equation The balanced net ionic equation includes only species that are involved in the reaction. Enter an equation of an ionic chemical equation and press the Balance button. (1 single bond and 3 double bonds with chlorine in its +7 oxidation stat. Magnesium iodide is a salt of magnesium and hydrogen iodide. Chemical nomenclature practice problems - Naming Compounds Practice Problems KEY. Because among the halogens the electronegativity is more for Fluorine followed by Chlorine, Bromine, Dodine. Solution. MgI 2 + 2 AgNO 3 = Mg(NO 3) 2 + 2 AgI See Steps to Balance MgI2 + AgNO3 = Mg(NO3)2 + AgI Solubility Equation Determine the state or phase of each substance (gas=g, liquid=l, solid/non-soluble=s, aqueous/soluble=aq) in its undissociated form by . 2 HI + Mg = MgI 2 + 2 H See Steps to Balance HI + Mg = MgI2 + H Solubility Equation When an ionic compound dissolves in solution, the ions of the molecule dissociate. a. CH 2 F 2 = Polar. I think you have done that. My thesis aimed to study dynamic agrivoltaic systems, in my case in arboriculture. Reflections. You can use parenthesis () or brackets . Magnesium Chloride. Use uppercase for the first character in the element and lowercase for the second character. I. Is magnesium and iodine ionic (MgI2)? Ionic Character has more to do with Electronegativity because the greater the difference in electronegativity the more similar the covalent bond is to an ionic one because the charges are distributed unevenly to a greater degree. . Classify the bond between atoms as ionic, nonpolar covalent, polar covalent, or metallic. Is o2 ionic or molecular? In the tincture of iodine solute and solvent are? CaBr2 + Mg(NO3)2 = Ca(NO3)2 + MgBr2 Chemical Formula Ionic or covalent compound Compound Name a. VO 2 b. Ionic bonds are formed when an electron moves from one atom to another, and covalent bonds are formed when two different atoms share one or more pair of electrons. The decreasing order of ionic character NaF>NaCl>NaBr>NaI. The bonds in PbS are predominantly covalent. . Sodium chloride and lead II nitrate. NH4CIO2 has a weak base and a strong acid, therefore it is a weakly acidic solution. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The Born-Haber cycle is an application of Hess's law that breaks down the formation of an ionic solid into a series of individual steps: Enthalpy of sublimation of Cs ( s) Cs ( s) Cs ( g) H = Hs = 76.5 kJ/mol. Is magnesium and iodine ionic (MgI2)? Ionic Character has more to do with Electronegativity because the greater the difference in electronegativity the more similar the covalent bond is to an ionic one because the charges are distributed unevenly to a greater degree. Both magnesium sulfate & magnesium chloride are acidic salts with pH values lower than 7 & the sulfate has a lower value than the chloride provided that they have the same concentrations. Thus the molecular ion peak in both A and B is 88. . DETERMINE WHETHER EACH SUBSTANCE BELOW IS IONIC, MOLECULAR OR AN ACID. As electronegativity increases, does ionic or covalent character increase? Allstate Protection Plan Phone Number, The chemical compounds with the formula MgI2 and its various hydrates MgI2 (H2O)x are known as magnesium iodide. It is a neutral salt as it is formed by the reaction of a strong acid and a strong base which results in formation of a salt which is neutral. I will omit the aq part on each ion t save typing but you should put it in. When MgCl2 is dissolved in water it produces strong acid HCl and strong base Mg(OH)2 . Enter an equation of an ionic chemical equation and press the Balance button. https://en.wikipedia.org/wiki/Chemical_bond. Compounds that contain hydrogen, oxygen, at least one other element, and have acidic properties are known as: oxyacids. Whereas lattice energies typically fall in the range of 600-4000 kJ/mol (some even higher), covalent bond dissociation energies are typically between 150-400 kJ/mol for single bonds. Magnesium loses two electrons in order to form (text Mg2+), and oxygen loses two electrons in order to form (text O2-). Startseite > Uncategorized > mgi2 ionic or molecular. Download Citation | On Jan 1, 2023, Yueling Liu and others published Density Functional Theory Study for Exploring the Mechanisms of the  Cycloaddition Reactions between 1- R -3 . . What is the name of the binary acid . I am currently continuing at SunAgri as an R&D engineer. When these electrons are lost, the magnesium ion Mg 2 is formed. The lattice energy ( Hlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. MgSO4 is a salt formed by a weak base and a strong acid (both dibasic), so there is a two-step hydrolysis of magnesium cation. Use uppercase for the first character in the element and lowercase for the second character. Magnesium iodide can be prepared from magnesium oxide, magnesium hydroxide, and magnesium carbonate by treatment with hydroiodic acid:, Magnesium iodide is stable at high heat under a hydrogen atmosphere, but decomposes in air at normal temperatures, turning brown from the release of elemental iodine. By the conclusion of this unit, you should be able to do the following: Name and write formulas for ionic and covalent compounds. Some metals form more than one ion. Sodium iodide has a Na(+) counterion and is a metal iodide salt. Because Mg(OH)2 is listed in Table 15.6. So when determining if a molecule is ionic or covalent, it is not always/only dependent on the electronegativity difference? On the Pauling Scale, for the most common oxidation state, Li = 0.98, Na = 0.93, K = 0.82, Cs = 0.79, Mg = 1.31, and I = 2.66 Do the arithmetic yourself. Label the half reaction as either oxidation or reduction. They can conduct electricity when melted or dissolved in water. If PbCr2O7 dissolves in water to form Pb2+ and Cr2O7^2- ions, then the Van Hoff's factor is 3.This is because one formula unit of PbCr2O7 produces three ions in solution: one Pb2+ ion and two Cr2O7^2- ions. CCl 4 = Nonpola. A central carbon (C) has four bonds that link or bond it to four hydrogen atoms (H). So, Is KCl an acid or base? According to Fajan's rule, the size should be small to have more ionic character. Directions: Label the following compounds as ionic (I), covalent (C), acid (A) or hydrate (H). The bond between the magnesium ion and the perclorate ion is Ionic Bond whereas the bond between chlorine and oxygen is covalent bond. Metallic bonds are best described as a sea of electrons. Answer = if4+ isPolar What is polarand non-polar? The balanced equation will appear above. Sodium iodide has a crystal lattice and is a water-soluble ionic compound. Write balanced molecular, ionic, and net ionic equations (NIE) for each of the following reactions. Magnesium Iodides Properties It appears to be a white crystalline solid with no odor. Therefore applying these definitions : H2SO4 = molecular , acid HI = molecular, acid You can see the pH value is 12. It is highly soluble in water (abot 90 g in 100 ml). THEN WRITE ITS FORMULA OR GIVE ITS NAME. its name. 100% (7 ratings) SOLUTION OF YOUR QUESTION . However, MgI2 is an ionic bond right? Practice: Predict the charge on monatomic ions. First write and balance the molecular equation. Overall Chemical Equation Ensure that the elements on both sides of the molecular equation are balanced by using the online chemical equation balancer. 4. To produce sodium bromide or sodium iodide, hot sodium will burn in bromine or iodine vapor. 2. . Magnesium iodide Mg +2 I - MgI2 Crisscross rule: the charge of . Methane, also known as CH4, is a covalent compound that has exactly 5 atoms linked by covalent bonds. Answer: It is magnesium perchlorate. Molecular weight calculation: 24.305 + 126.90447*2. Different chemical salt form of medicinal agent . Notes Chemistry 1 401 500 - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Another method to prepare MgI2 is mixing powdered elemental iodine and magnesium metal. Answer: magnesium iodide ( MgI2 ) is ionic bond What is chemical bond, ionic bond, covalent bond? ! Ionic compounds do not exist as molecules. ClF = Polar Covalent. If the ground state electronic configuration of (X) is 1s^2 2s^2 2p^3 , the simplest formula for this compound is : Class 11 >> Chemistry >> Chemical Bonding and Molecular Structure >> Ionic or Electrovalent Bond >> Magnesium reacts with an element (X) to Question Similarly, CaF 2 would dissociate into one Ca2+ and two F ions. The simplest explanation is that MgI2 is ionic, because Mg is an alkali metal, which reacts by losing electrons, and I is a halogen, which reacts by gaining them. Molecular Equation: 2NaCl(aq) + Pb(NO3)2(aq) ( PbCl2(s) + 2NaNO3(aq) Complete Ionic Equation: Molar mass of MgI2 = 278.11394 g/mol. CaBr2 is not a basic salt. MgI 2 + BaS = BaI 2 + MgS See Steps to Balance MgI2 + BaS = BaI2 + MgS Solubility Equation Determine the state or phase of each substance (gas=g, liquid=l, solid/non-soluble=s, aqueous/soluble=aq) in its undissociated form by using the . Itll have the appearance of Mg2I1. If you have. Classify the bond between atoms as ionic, nonpolar covalent, polar covalent, or metallic. As a general rule of thumb, compounds that involve a metal binding with either a non-metal or a semi-metal will display ionic bonding. ; Image Credit: Mcardlep / CC BY-SA (Links to an external site.) Chemical nomenclature practice problems - Apps can be a great way to help students with their algebra. Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. Answer: B2 2-is a Diamagnetic What is Paramagnetic and Diamagnetic ? 9/10 Quality score 72247+ Completed orders People said. Question = Is SbCl5 ( Antimony pentachloride ) polar or nonpolar ? When magnesium reacts with oxygen to form magnesium oxide, for example, the magnesium atom loses two electrons in order to form the Mg2 cation, which has an electronic configuration of 2,8. Ionic Molecular Answer Bank CH4 KBr SO2 FeCl3. The binary MgI2-Mg3(PO4)2 proven to be a good candidate to be used as an electrolyte in solid state battery and the OCV of the coin-cell obtained was 0.743Volt. Enter an ionic equation (solubility states are optional) to calculate its complete and net ionic equations. (MgI2)PubChem CID66322Molecular FormulaMgI2 or I2MgSynonyms10377-58-9 . Magnesium iodide is the name for the chemical compounds with the formulas MgI 2 and its various hydrates MgI 2 (H 2 O) x. Magnesium chloride is slightly acidic because it is formed by the reaction of a relatively weak base. Mg (NO3)2 + KI = MgI2 + KNO3 Net Ionic Equation Net Ionic Equation Overall Chemical Equation Ensure that the elements on both sides of the molecular equation are balanced by using the online chemical equation balancer. These salts are typical ionic halides, being highly soluble in water. Practice: Naming ionic compounds. The balanced equation will be calculated along with the solubility states, complete ionic equation, net ionic equation, spectator ions and precipitates. . Question: Is calcium oxidean ionic or covalent bond ? Magnesium is a metal and like most of the metals, it form basic oxides. This is the currently selected item. In order to obtain anhydrous MgI2, the reaction should be conducted in a strictly anhydrous atmosphere; dry-diethyl ether can be used as a solvent. Make certain to distinguish between ionic and covalent compounds. The compound magnesium iodide, MgI2 is soluble in water. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. Worked example: Finding the formula of an ionic compound. The formation of molecular bromine (Br) from HBr and KBroz must be derived using redox reactions. Aqueous solution of magnesium sulfate is going to be slightly acidic, and there is no need to even go to the lab to test it. Molecular compounds are elec . Magnesium sulfate is an ionic compound as there is a bond between a metal and a non-metal. Answer = C2H6O is Polar What is polarand non-polar? As a result, MgO is the correct formula for this ionic compound. Bond type The need for the number of electrons lost being equal to the number of electrons gained explains why ionic compounds have the ratio of cations to anions that they do. Classify each as ionic or covalent and name each compound. What is the molecular, ionic, and net ionic equations for Copper(II) sulfate + sodium phosphate? The simplest explanation is that MgI2 is ionic, because Mg is an alkali metal, which reacts by losing electrons, and I is a halogen, which reacts by gaining them. This chemical formula says that there are one magnesium ion and two chloride ions in this formula. 95.211 g/mol (anhydrous) Density of Magnesium Chloride. Answer = SCl6 is Polar What is polarand non-polar? The salts of strong acid and weak base give acidic solutions . NAMING COMPOUNDS Naming and writing chemical formula Naming ionic compounds Rule in Naming Ionic compound When metals lose electrons they become ions, but their name does not change. Magnesium Chloride is also called Magnesium dichloride or magnesium (II) chloride or Chloromagnesite and has one magnesium (Mg) and two chloride ions (Cl-). Magnesium iodide Magnesium iodide (MgI2). HI + Mg = MgI2 + H Net Ionic Equation Net Ionic Equation Overall Chemical Equation Ensure that the elements on both sides of the molecular equation are balanced by using the online chemical equation balancer. Question = Is SiCl2F2polar or nonpolar ? Chemical bond A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. Magnesium (Mg) is a chemical element that is one of the periodic tables alkaline-earth metals Group 2 (IIa), as well as the lightest structural metal. Molecular weight/molar mass of MgCl 2. Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds. 2) MgI2 magnesium iodide. Oxygen attracts the two valence electrons from the magnesium atom, which are transferred from the magnesium atom to the oxygen atom because it has a higher electronegativity. MgSO 4 + 2 KI = K 2 SO 4 + MgI 2 See Steps to Balance MgSO4 + KI = K2SO4 + MgI2 Solubility Equation Determine the state or phase of each substance (gas=g, liquid=l, solid/non-soluble=s, aqueous/soluble=aq) in its undissociated form by using the . Chemical bond A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. Science; Chemistry; Chemistry questions and answers; 3- Determine whether each compound is ionic or covalent and write the appropriate Lewis structure (4 pts) a- HCN b- CIF c- Mgl2 d- Cas 4- Determine the molecular geometry of each of the following molecules: a- CBr4 b- H2CO c- CS2 d- BH3 e- NO3 (5 pts.) Magnesium iodide is the name for the chemical compounds with the formulas MgI 2 and its various hydrates MgI 2 (H 2 O) x. IONIC COMPOUNDS Review How do you name metal ions? Naming Simple Ionic Compounds. Overall Chemical Equation Ensure that the elements on both sides of the molecular equation are balanced by using the online chemical equation balancer. What is the ICD-10-CM code for skin rash. The two opposite charges are attracted and form the ionic bond between atoms in Magnesium chloride.---Helpful ResourcesMetals, Non-Metals on the P- Table: https://youtu.be/OoooStZQHdAIonic, Covalent, \u0026 Polar Covalent: https://youtu.be/OHFGXfWB_r4Electronegativity for each element: https://en.wikipedia.org/wiki/Electronegativity---Because we have a combination of a metal and non-metalm MgCl2 (Magnesium chloride) is considered an ionic compound.In general, ionic compounds:- form crystals.- have high melting points and boiling points.- are hard and brittle.- conduct electricity when dissolved in water.- as solids do not conduct electricity.For more chemistry help, see http://www.Breslyn.org. In general, molecular compounds form when NONMETALS_combine together. If you're electronegativity differences are between 1.7 and 0.5 then it's a polar . Iodide is iodines ionic state, which occurs when iodine reacts with another element, such as potassium, to form a salt. The bond between the magnesium ion and the perclorate ion is Ionic Bond whereas the bond between chlorine and oxygen is covalent bond. Magnesium metal forms a doubly charged cation. Figure out math questions. Write the net ionic equation for the dissociation reaction that occurs when solid magnesium iodide dissolves in water: Use the pull-down boxes to specify states such as (aq) or (s). Naming monatomic ions and ionic compounds. The Periodic Tables Group 17 contains iodine. (1 single bond and 3 double bonds with chlorine in its +7 oxidation state). As a Lewis structure, we draw this covalent bonding (see diagram). The results in the metal becoming a postitive ion and the non-metal a negative ion. ), Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams, Work, Gibbs Free Energy, Cell (Redox) Potentials, Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH), Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust, Kinetics vs. Thermodynamics Controlling a Reaction, Method of Initial Rates (To Determine n and k), Arrhenius Equation, Activation Energies, Catalysts, Chem 14B Uploaded Files (Worksheets, etc. Get the free "NET IONIC EQUATION CALCULATOR" widget for your website, blog, Wordpress, Blogger, or iGoogle. For example, MgI2 has a electronegativity difference of 1.3 (which is smaller than 1.67, the rule to be a covalent bond). Is the ionic bond between iodine and sodium? Ionic compounds are named simply by naming the ions present. KCl is a neutral salt as it is made from the neutralization reaction of the strong acid(HCl) with a strong base(KOH). Solution Verified by Toppr The decreasing order of ionic character NaF>NaCl>NaBr>NaI. We will begin by learning the rules of naming ionic compounds first. This salt is acidic in nature since it is derived from a weak base (NH3) and a strong acid (HNO3). Juni 2022; Beitrags-Kategorie: xrp fee calculator; Beitrags-Kommentare: . Nonmetals react with metals to form ionic compounds. You can override the automatically calculated compound states below. Because the reaction releases a lot of heat, magnesium burns brightly. Production [ edit] Neutralization of any strong acid with a strong base always gives a neutral salt. Iodide, or iodide, is the most common form found in nature. Most service stations will accept oil as long as it, He was 76. When we. Look at the Periodic Table. What does an ionic bond look like in a formula? They have high melting points. Include states of matter in your balanced equation. Chemistry questions and answers. Except where otherwise noted, data are given for materials in their standard state (at 25 C [77 F], 100 kPa). Naming Ionic and Covalent compounds follow different rules. Chemical bonds are formed when a chemical compound is created through the joining of multiple atoms. Use uppercase for the first character in the element and lowercase for the second character. Also, electronegativities are. NO 2 Ionic covalent Vanadium (IV) oxide Nitrogen dioxide c. CrBr 2 d. CdBr 2 e. SBr 2 Ionic Ionic covalent Chromium II bromide Cadmium bromide Sulfur dibromide f. Na 2Cr 2O7 g. Na 2CrO 4 h. Cr 2O3 i. N2O3 Ionic sodium sulfate magnesium iodide. The closer the difference between electrons of an atom is over the periodic table (or the smaller difference between electronegativity) tends to be more covalent than ionic. Write an appropriate Lewis structure for each of the following compounds. ! To tell if MgCl2 (Magnesium chloride) is ionic or covalent (also called molecular) we look at the Periodic Table that and see that Mg is a metal and Cl is a non-metal. When described as an acid, the correct name of H2S is: hydrosulfuric acid. Is mgl2 ionic or covalent? If you mean which has the most ionic character, the answer is whichever pair exhibits the most difference in electronegativity between the two atoms. Transcribed image text: Classify each compound as ionic or molecular. xH2O. especially its chemical reactions, but also its composition, structure . ! order now. The concentration of the additive in the electrolyte was . A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. Magnesium acts as a cation and Iodine acts as an anion.The charge of Mg would be 2+ and the I would be 1- . Chemical bonds are formed when a chemical compound is created through the joining of multiple atoms. Sodium chloride is an ionic compound. You can use parenthesis () or brackets . Magnesium fluoride is an inorganic compound with the formula Mg F 2. (NH4)3PO4 + ZnSO4 = Zn3(PO4)2 + (NH4)2SO4. Convert grams MgI2 to moles or moles MgI2 to grams. Magnesium Nitrate is a water-soluble crystalline magnesium source for use with nitrates and pH levels that are lower (acidic). 714 C. To do this, you will need to use what you already know about the Periodic Table. Beitrags-Autor: Beitrag verffentlicht: 14. Usage of magnesium iodide in the Baylis-Hillman reaction tends to give (Z)-vinyl compounds. The two valence electrons of Mg will be distributed to each of the Iodine atoms. Understand and correctly perform "crisscross" method for creating stable ionic compounds chemistry. Write it by breaking all the soluble ionic compounds into their respective ions. Is TiO2 a ionic or covalent bond? Nausea, diarrhea, low blood pressure, muscle weakness, and fatigue are all symptoms of magnesium overdose. The results in the metal becoming a positive ion. Overall Chemical Equation Ensure that the elements on both sides of the molecular equation are balanced by using the online chemical equation balancer. Among the 4 MX2 compounds that can form by combining the cations and ions (MgCl2, BaCl2, MgI2, BaI2), BaCl2 will have the most ionic character.- The bonding in MgCl2, MgI2, BaCl2, and BaI2 are all best described as fully ionic. These salts are typical ionic halides, being highly soluble in water. Iodide forms a singly charged anion. Common polyatomic ions. You can override the automatically calculated compound states below. How Many Soldiers Died From Friendly Fire In Ww2, For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will. Ionic bonds are formed when an electron moves from one atom to another, and covalent bonds are formed when two different atoms share one or more pair of electrons. The simplest explanation is that MgI2 is ionic, because Mg is an alkali metal, which reacts by losing electrons, and I is a halogen, which reacts by gaining them. mixed bond (not ionic, not covalent). Its compounds are widely used in construction and medicine, and magnesium is one of the elements essential to all cellular life. Based on ion sizes, rank these compounds of their expected lattice energy. Here, the convention is used where the ionic solid is separated into ions, meaning the lattice energies will be endothermic (positive values). Also, electronegativities are. Find more Chemistry widgets in Wolfram|Alpha. B. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. mgi2 ionic or molecular The simplest explanation is that MgI2 is ionic, because Mg is an alkali metal, which reacts by losing electrons, and I is a halogen, which reacts by gaining them. Remember, with resonance oprating, all the oxygen atoms are chemically indistinguishable in solution and gas phase. Compound states [like (s) (aq) or (g)] are not required.