Question 1

Which of the following molecules has a Lewis structure that exhibits resonance?

Accepted Answer

NO$_3^-$

Question 2

What is the molecular geometry and approximate bond angle of NO$_3^-$ according to VSEPR theory?

Accepted Answer

Trigonal planar, $\sim 120^\circ$

Question 3

Which of the following molecules contains a central atom with an expanded octet?

Accepted Answer

SF$_6$

Question 4

Given the Lewis structure for PO$_4^{3-}$, how many resonance structures can be drawn for this ion?

Accepted Answer

4

Question 5

Which of the following molecules is predicted to have a bent molecular geometry?

Accepted Answer

H$_2$S

Question 6

What is the formal charge on the central atom in the most stable Lewis structure of NO$_3^-$?

Accepted Answer

$+1$

Question 7

Which of the following molecules has the largest bond angle?

Accepted Answer

CO$_2$

Question 8

Which of the following best describes the bond between Cl and F in ClF$_3$?

Accepted Answer

Polar covalent

Question 9

Which molecule has a central atom with three lone pairs and two bonded atoms?

Accepted Answer

I$_3^-$

Question 10

Which of the following molecules is expected to be nonpolar despite having polar bonds?

Accepted Answer

CF$_4$

Question 11

Which of the following molecules has the strongest nitrogen-nitrogen bond?

Accepted Answer

N$_2$

Question 12

What is the electron domain geometry of SF$_4$?

Accepted Answer

Trigonal bipyramidal

Question 13

Which of the following molecules has a seesaw molecular geometry?

Accepted Answer

SF$_4$

Question 14

Which of the following molecules has a central atom with a formal charge of $-1$ in its most stable Lewis structure?

Accepted Answer

NO$_2^-$

Question 15

Which of the following molecules is predicted to have a T-shaped molecular geometry?

Accepted Answer

ClF$_3$

Question 16

Which of the following molecules has a central atom with no lone pairs and four bonded atoms?

Accepted Answer

CF$_4$

Question 17

Which of the following molecules has a bond angle closest to $90^\circ$?

Accepted Answer

SF$_6$

Question 18

Which of the following molecules is expected to have a dipole moment of zero?

Accepted Answer

CO$_2$

Question 19

Which of the following molecules has a central atom with five electron domains?

Accepted Answer

PF$_5$

Question 20

Which of the following molecules is predicted to have a square planar molecular geometry?

Accepted Answer

XeF$_4$

Lewis Structures, Resonance, and Molecular Geometry: Study Notes for General Chemistry

Study Guide - Practice Questions