AP Chemistry: 2.6 Resonance and Formal Charge – Exam Style questions with Answer- MCQ

Question

(i) \(PCl_3\)           (ii) \(CH_2Cl_2\)           (iii) HCN           (iv) \(C_2H_4\)           (v) \(NH_3\)
In which Lewis structure does the central atom have a non-zero formal charge?
A) (i)           B) (ii)           C) (iii)            D) (v)            E) none

▶️Answer/Explanation

Ans: E

Question

 The formal charge on carbon in the molecule below is __________.

A) 0           B) +1           C) -1           D) +3           E) +2

▶️Answer/Explanation

Ans: A

Question

How many equivalent resonance forms can be drawn for SO2 without expanding octet on the sulfur atom
(sulfur is the central atom)?
A) 3           B) 0           C) 4           D) 2           E) 1

▶️Answer/Explanation

Ans: D

Question

Of the molecules below, only __________ is polar.
A) \(SbF_5\)           B) \(I_2\)           C) \(AsH_3\)           D) \(SF_6\)           E) \(CH_4\)

▶️Answer/Explanation

Ans: C

Question

 Of the following molecules, which has the largest dipole moment?
(A) CO
(B) \(CO_2\)
(C) \(O_2\)
(D) HF
(E) \(F_2\)

▶️Answer/Explanation

Ans: D

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