Chapter 4 Review

How many valence electrons does oxygen have?

• 16

• 6

• 4

• 2

What are the four quantum numbers for the last electron in Chromium?

• 3, 2, 1, -1/2

• 3, 3, 1, +1/2

• 3, 2 , 1, +1/2

• 4, 2, 1, +1/2

The lowest energy state of an atom is its

• principle quantum number

• excited state

• magnetic quantum number

• ground state

Which of the following discoveries is Niels Bohr given credit?

• discovering the electron

• linking special lines with electron energy levels

• explaining the details of bioluminesence

• explaining the chemical behavior of atoms

What is the frequency of red light if the wavelength is 6.5 x 10 ^-7 m?

• 4.6 x 10 ¹⁴ Hz

• 3.0 x 10⁸ Hz

• 1.3 x 10 ⁶ Hz

• 9.8 x 10 ⁴ Hz

What is the wavelength of blue light if the frequency is 6.60 x 10 ¹⁴ Hz?

• 3.9 x 10^-3 m

• 2.2 x 10^-7 m

• 3.0 x 10^-8 m

• 4.5 x 10^-7 m

How much energy is found in a photon of yellow light with a wavelength of 5.9 x 10^-7 m?

• 1.3 x 10 ¹⁴ J

• 3.9 x 10 ^-19 J

• 3.4 x 10 ^-19 J

• 3.4 x 10 ¹⁴ J

Which element has a shorthand gas notation [Kr]5s²4d²?

• Se

• Zr

• Sr

• Mo

Which of the following sets of quantum numbers is possible?

• 2, 2, 1, +1/2

• 2, 0, 0, -1/2

• 2, 0, 1, -1/2

• 1, 1, 0, +1/2

The magnetic quantum number (ml) represents what about the orbital?

• Size

• Shape

• Orientation

• Spin