Quantum Mechanics

An electron occupies the lowest energy orbital that can receive it.

• Hund’s rule
• Pauli exclusion principle
• Bohr model of the atom
• Aufbau principle

All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.

• Aufbau principle
• Pauli exclusion principle
• Hund’s rule
• Core Notation

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

• Aufbau principle
• Pauli exclusion principle
• Hund’s rule
• Noble gas notation

Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?

• Hund's
• Aufbau's
• Pauli's Exclusive

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?

• Aufbau's
• Hund's
• Pauli exclusive

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the waves shown below has the higher frequency?

• wave A
• Wave B

Tags

NGSS.HS-PS4-1

How many electrons can an energy level of n = 2 hold?

• 32
• 24
• 8
• 6

Identify the element for
[Xe] 6s² 4f¹⁴ 5d⁴

• Cobalt
• Iron
• Tungstun

Tags

NGSS.HS-PS1-1