Moonpark College » Chemistry » Chem R110 - Elementary Chemistry » Spring 2021

Question #1

Which of the statements about light is FALSE?

A. Light travels much faster than sound.

B. A characteristic feature of light that determines its color is its wavelength.

C. All of these statements are true.

D. A packet of light energy is called a photon.

E. Light travels through space at a speed of 3.00 × 10^8 m/s.

Question #2

What is the correct order of the electromagnetic spectrum from shortest wavelength to longest?

A. Radio Waves→X-rays→Ultraviolet Radiation→Visible Light→Infrared Radiation→Microwaves→Gamma Rays

B. Gamma Rays→X-rays→Ultraviolet Radiation→Visible Light→Infrared Radiation→Microwaves→Radio Waves

C. Gamma Rays→X-rays→Visible Light→Ultraviolet Radiation→Infrared Radiation→Microwaves→Radio Waves

D. Visible Light→Infrared Radiation→Microwaves→Radio Waves→Gamma Rays→X-rays→Ultraviolet Radiation

E. Gamma Rays→X-rays→Infrared Radiation→Visible Light→Ultraviolet Radiation→Microwaves→Radio Waves

Question #3

What is the maximum number of electrons that can occupy the third principal energy level?

A. 18

B. 8

C. 2

D. 6

Question #4

In the third principal energy level, which sublevel contains electrons with the greatest energy?

A. 3p

B. 3f

C. 3d

D. 3s

Question #5

The ground state electron configuration for an atom of carbon is

A. 1s2 2s4.

B. 1s2 2s2 2p4.

C. 1s2 2s2 2p.2

D. 1s2 2s2.

Question #6

How many unpaired electrons correspond to the ground state of oxygen?

A. 2

B. 0

C. 1

D. 3