Question 1

Which of the following best describes the electron geometry around the central atom in carbon disulfide ($$\mathrm{CS_2$}$$)?

Accepted Answer

Linear

Question 2

How many electron groups are around the central atom in hydrogen sulfide ($$\mathrm{H_2S}$$)?

Accepted Answer

4

Question 3

What is the electron geometry of the nitrogen atom in methylamine ($$\mathrm{CH_3NH_2}$$)?

Accepted Answer

Tetrahedral

Question 4

Which of the following molecules has a trigonal planar electron geometry?

Accepted Answer

$$\mathrm{CH_2O}$$

Question 5

A molecule has three bonding pairs and one lone pair around the central atom. What is its electron geometry?

Accepted Answer

Tetrahedral

Question 6

Which of the following statements is TRUE regarding electron geometry?

Accepted Answer

Electron geometry is determined by the number of electron groups around the central atom.

Question 7

What is the electron geometry of a molecule with four electron groups around the central atom?

Accepted Answer

Tetrahedral

Question 8

Which of the following best describes the electron geometry of $$\mathrm{NH_3$} ($$ammonia)?

Accepted Answer

Tetrahedral

Question 9

If a molecule has two electron groups around the central atom, what is its electron geometry?

Accepted Answer

Linear

Question 10

Which of the following molecules has a tetrahedral electron geometry?

Accepted Answer

$$\mathrm{H_2O}$$

Question 11

A molecule with three electron groups around the central atom will have which electron geometry?

Accepted Answer

Trigonal planar

Question 12

Which of the following is NOT a possible electron geometry for a molecule with only single bonds?

Accepted Answer

Bent

Question 13

How many electron groups are around the central atom in $$\mathrm{CH_2O} ($$formaldehyde)?

Accepted Answer

3

Question 14

Which of the following best explains why $$\mathrm{H_2O}$$ has a bent molecular shape but a tetrahedral electron geometry?

Accepted Answer

It has two bonding pairs and two lone pairs on the central atom.

Question 15

Which of the following molecules has a linear electron geometry due to the arrangement of its electron groups?

Accepted Answer

$$\mathrm{CO_2$}$$

Electron Geometry: Understanding Molecular Shapes

Study Guide - Practice Questions