Atomic Theory Review

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does an atom with the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹ have?

Back

2

Front

What is the maximum number of electrons that can occupy the 4p sublevel?

Back

6

Front

What is the smallest particle of an element that retains the properties of the element?

Back

Atom

Front

As wavelength increases, what happens to energy?

Back

Energy decreases.

Front

What principle states that a maximum of two electrons can occupy a single atomic orbital, but only if the electrons have opposite spins?

Back

The Pauli exclusion principle.

Front

What is the Aufbau principle?

Back

The Aufbau principle states that electrons occupy the lowest energy orbitals first before filling higher energy levels.

Front

What is Hund's rule?

Back

Hund's rule states that electrons will fill degenerate orbitals singly before pairing up.

Front

What is the electron configuration for a neutral oxygen atom?

Back

1s² 2s² 2p⁴.

Front

How many total electrons can the third energy level hold?

Back

18 electrons.