Chemistry, Chapter 5, The Electron, Post Assessment

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

• 3
• 6
• 8
• 10

What atom matches this electron configuration?
[Xe] 6s²5d⁹

• Mercury
• Gold
• Platinum
• Thallium

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

What are the sublevels that make up the n=4 energy level?

• s
• s, p
• s, p, d
• s, p, d, f

Electrons fill energy levels and sublevels _____ energy first.

• lower
• higher

This "rule" of Quantum Chemistry states that no 2 electrons in an atom can be in the exact same state...each electron in an atom can be described by a unique set of quantum numbers.

• Hund's Rule
• Heisenberg Uncertainty Principle
• Aufbau Principle
• Pauli Exclusion Principle

The clockwise or counterclockwise motion of an electron

• electron spin
• quantum
• Hund's rule
• orbital

This states that orbitals of equal energy are occupied by one electron each before any of those orbitals are occupied by a second electron (split 'em up before you pair 'em up)

• Hund's rule
• Pauli exclusion principle
• Aufbau principle
• quantum mechanical model

Describes the most stable arrangement of electrons around the nucleus of an atom, using superscripts with sublevels

• electron configuration
• orbital diagram
• Bohr model of the atom
• quantum

This says that electrons enter orbitals of lowest energy first

• Aufbau principle
• Hund's rule
• Pauli exclusion principle