2.6 Electron Configurations and Orbital Notations

Front

What is the Pauli Exclusion Principle?

Back

Electrons are paired in an orbital with opposite spins; no two electrons in an atom can have the same set of quantum numbers.

Front

What is the electron configuration for neon?

Back

1s² 2s² 2p⁶.

Front

What is the electron configuration for beryllium?

Back

1s² 2s².

Front

What is the element with the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶?

Back

Argon.

Front

What is the Aufbau principle?

Back

Electrons occupy the lowest energy orbitals first before filling higher energy levels.

Front

What is the maximum number of electrons that can occupy a single orbital?

Back

Two electrons, with opposite spins.

Front

What is the significance of the quantum numbers in electron configurations?

Back

Quantum numbers describe the energy level, shape, orientation, and spin of electrons in an atom.

Front

What is the difference between the 2s and 2p orbitals?

Back

2s is spherical and can hold 2 electrons, while 2p has a dumbbell shape and can hold 6 electrons.

Front

What is Hund's Rule?

Back

Electrons will fill degenerate orbitals singly before pairing up.

Front

What is the electron configuration for oxygen?

Back

1s² 2s² 2p⁴.