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$$_2S$$

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

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