Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by electrons.

Front

What does the notation 1s² represent?

Back

It indicates that there are 2 electrons in the 1s orbital.

Front

How many electrons can the p sublevel hold?

Back

The p sublevel can hold a maximum of 6 electrons.

Front

What is noble-gas notation?

Back

A shorthand method of writing electron configurations using the nearest noble gas to represent core electrons.

Front

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

Back

The d sublevel can hold a maximum of 10 electrons.

Front

What is the electron configuration for calcium?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s².

Front

How many total electrons does an atom with the configuration 1s² 2s² 2p⁶ 3s² 3p⁶ have?

Back

It has 18 electrons.

Front

What is the significance of the Aufbau principle?

Back

It states that electrons occupy the lowest energy orbitals first before moving to higher energy levels.

Front

What is Hund's rule?

Back

Electrons will fill degenerate orbitals singly before pairing up in the same orbital.

Front

What is the Pauli Exclusion Principle?

Back

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