gases. C) ionic compounds are all solids, and covalent compounds are liquids or
ID: 103292 • Letter: G
Question
gases. C) ionic compounds are all solids, and covalent compounds are liquids or gases. D) covalent compounds are all gases, but ionic compounds may be solids, liquids, or gases 3 Which of the following molecules is expected to have the highest melting point? A) H2 B) Cl2 C) CCI4 D) NaCl 14. The nitrogen-nitrogen bond in N-N: has a bond order of A) 3 B) 1 C) 2 D) 6 15. Which is the most acceptable electron dot structure for N2H2? B)H-N N-H 16. How many lone pairs of electrons are on the I atom in IF5? A) 0 B) 1 C) 2 D) 3 17.) How many electrons are in the valence shell of I in IF4-? A) 8 B) 10 C) 12 D) 14 18. Identify the fourth-row element X that forms the ion.Explanation / Answer
13. NaCl is expected to have the highest melting point as it is an ionic compound.
14. The bond order is 3.
15.The most acceptable electron dot structure is option (B).
16. The number of lone pair of electron in IF5 is one.
17. There are 12 valence electrons in the valence shell of I.
18. Bromine is the fourth-row halogen which forms ion.
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