Atomic Structure Chapter Test

Why do atoms emit light energy according to the Bohr model?

• Because an electron has fallen to a lower energy state.

• Because an electron has fallen into the nucleus.

• Because a positron has been emitted.

Quantum numbers can tell us ________________.

• The velocity of an electron.

• The probable location of an electron.

• The energy of an electron.

The angular quantum number (l) designates __________ of orbitals.

• orientation

• spin

• shape

At maximum, an f-subshell can hold __________ electrons, a d-subshell can hold __________ electrons, and a p-subshell can hold __________ electrons.

• 14, 10, 6

• 14, 10, 2

• 14, 8, 2

Which of the following is the ground state electron configuration of Ni?

• 1s²2s²2p⁶3s²3p⁶4s²3d⁸

• 1s²2s²3s²3p⁶4s²3d⁶

• 1s²2s²2p⁶3s²3p⁶4d⁸

How many quantum numbers are necessary to designate a particular electron in an atom?

• 6

• 4

• 2

Which of the following orbitals could not exist?

• 2p

• 1s

• 1d

What is the Aufbau principle?

• The lower the principal quantum number (n) the lower the energy.

• The Aufbau Principle states that electrons enter the lowest energy orbitals first.

• Both

What is incorrect about this orbital diagram?

• There is nothing incorrect with this diagram

• Both arrows in the filled 2p box should be pointing the same direction

• In the there should only be 1 arrow in the first 2p box and one in the 2nd 2p box

No two electrons in the same atom can have the same four quantum numbers.

• Aufbau Principle

• Pauli's Exclusion Principle

• Noble gas notation