CHM 110 Practice 3

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Nickel

• Zinc

• Germanium

• Copper

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 4

• 6

• 8

• 10

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p⁷

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

How many quantum numbers are needed to describe the energy state of an electron in an atom?

• 7

• 3

• 5

• 4

For the quantum number, "l", equal to 2, is an "m_l" value of -1 permitted?  

• Yes

• No

How many orbitals in the d subshell? 

• 6

• 7

• 3

• 5

What is the correct representation for an orbital which has an "n" value of 4 and an "l" value of 2?  

• 4s

• 4p

• 4d

• 4f

How many orbitals in the p subshell? 

• 3

• 1

• 7

• 5

For a p sublevel, "l" equals ____.

• 2

• 1

• 0

• 3