Chem4practicefinal

Chem4practicefinal - 1. The Lewis structure : X X : would...

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Unformatted text preview: 1. The Lewis structure : X X : would be obtained for which element? a) X equals C b) X equals N c) X equals O d) X equals F e) X equals B 2. In the Lewis structure for SF 6 , the central sulfur shares ________ electrons. a) 4 b) 8 c) 10 d) 12 e) none of the above, because SF 6 is an ionic compound 3. How many electrons can be contained in all of the orbitals with n = 2? a) 2 b) 8 c) 10 d) 18 e) 32 4. For the elements Cs, F, and Cl, the order of electronegativity is: a) F < Cl < Cs b) Cs < Cl < F c) Cl < Cs < F d) F < Cs < Cl e) none of these 5. Which of the following has the smallest radius? a) Cl- b) K + c) Cr d) Al 3+ e) Ar 6. Which of the following represents the BEST Lewis structure for N 3- ? a. N N N-1-1 +1 b. N N N-1-1 +1 c. N N N-1 d. N N N-1-2 +2 7. In which of the following does nitrogen have an oxidation state of +4? a) HNO 3 b) NO 2 c) N 2 O d) NH 4 Cl e) NaNO 3 8. The oxidation state of chromium in K 2 CrO 4 is: a) -1 b) +3 c) +7 d) +8 e) none of these 9. All noble gases have the following number of valence electrons: a) 0 b) 3 c) 5 d) 7 e) none of these Page 2 of 6 10. Balanced chemical equations imply which of the following?...
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Chem4practicefinal - 1. The Lewis structure : X X : would...

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