CHEM-C100 CHAPTER 5 QUIZ

Which of the following is a correct Lewis structure? A. [: N≡N :] B. [: C≡C :] C. [: O≡O :] D. All of the answers are correct (not including the answer that says "None") E. None of the these answers are correct

A. [: N≡N :]

Which of the following gives the correct Lewis dot representation of the calcium ion in the ionic compound calcium chloride? A. [Ca :]. B. [Ca]2+. C. [Ca .]+.

B. [Ca]2+.

What is the correct molecular geometry for sulfur dioxide, SO2?

Bent

Which of the following molecules is nonpolar? A. SF2. B. NF3. C. CF4.

C. CF4

Which of the following molecules or ions does not exhibit resonance? A. [NO3]-. B. CO2. C. [NH4]+

C. [NH4]+

How does cocaine affect the brain?

Cocaine interferes with the uptake of neurotransmitters in the pleasure-sensing region of the brain.

How are covalent bonds formed?

Electrons are shared between two atoms by overlapping orbitals.

Which statement about carbon dioxide (CO2) is correct?

It is a nonpolar molecule with polar bonds.

Which of the following molecular geometries is required on a carbon atom so that a compound can have stereoisomers?

Tetrahedral

What is the correct molecular geometry for ammonia, NH3?

Trigonal pyramidal