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Q: 6. Which of the following has a noble gas configuration: 1. Li?+ 2. Be* 3. B2+ 4. C2+ 5. N2-
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WHICH OF THE FF DOES NOT BELONG TO THE GROUP?
(NH4)2S, Ba(OH)2, (NH4)2CO3, BaCl2
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- Write the electron configuration for the monatomic ions formed from the following elements (which form the greatest concentration of monatomic ions in seawater):(a) Cl(b) Na(c) Mg(d) Ca(e) K(f) Br(g) Sr(h) FPart A) Out of the following, the species with a single covalent bond is: (a) CO (b) CN- (c) Cl2 (d) N2 Part B) Which of the following compounds has ionic bonds only? (a) NH4ClO4 (b) Mg3N2 (c) Mg3(PO4)2 (c) CHCl3 Part C) The molecular shape and polarity of xenon tetrafluoride are: (a) Tetrahedral & non-polar (b) square planar & non-polar (c) Square pyramidal & polar (d) square planar & polar1- The following chemical reaction takes place in an aqueous solution: FeBr2 (aq) + 2KOH (aq) → Fe(OH)2 (s) + 2KBr (aq) Write the net ionic equation for this reaction. 2- Draw the Lewis structure for ethane (C2H6). Be certain you include any lone pairs. 3-Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced. HBr + Ca(OH)2 → 4-A chemistry student needs 25.0 g of methyl acetate for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of methyl acetate is 0.934 g *cm-3. Calculate the volume of methyl acetate the student should pour out. Be sure your answer has the correct number of significant digits. ____________mL 5- NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio…
- For which of the following substances is the least energy required to convert one mole of the solid into separate ions? (a) MgO (b) SrO (c) KF (d) CsF (e) MgF2For which of the following substances is the least energy required to convert one mole of the solid into separate ions?(a) MgO(b) SrO(c) KF(d) CsF(e) MgF2What is the electron configuration of Co²⁺?
- Which of the following compounds does not contain both ionic and covalent bonding? Justify your answer. (a) Na2SO4(b) NH+NO3(c) NH4C1(d) KCl(e) KclO4Which member of each pair has more covalentcharacter inits bonds: (a) LiCl or KCl; (b) AlCl₃ or PCl₃; (c) NCl₃ or AsCl₃?Give a reason why each of the following statements is a safeprediction:(a) Every compound of Rb with a nonmetal is ionic in character.(b) Every compound of nitrogen with a halogen element is amolecular compound.(c) The compound MgKr2 does not exist.(d) Na and K are very similar in the compounds they form withnonmetals.(e) If contained in an ionic compound, calcium (Ca) will be inthe form of the doubly charged ion, Ca2