Electron configuration

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, described by a series of numbers and letters (e.g., 1s2 2s2 2p6).

Front

What does the notation '1s2' indicate?

Back

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

Front

Which element has the electron configuration 1s2 2s2 2p6?

Back

Neon.

Front

Why do electrons fill the 4s orbital before the 3d orbital?

Back

Because the 4s orbital has lower energy than the 3d orbital.

Front

What is the shape of an s orbital?

Back

Spherical.

Front

What is the shape of a p orbital?

Back

Dumbbell-shaped.

Front

How many orbitals are in the d subshell?

Back

Five orbitals.

Front

What is the maximum number of electrons that can occupy a p subshell?

Back

Six electrons.

Front

What is Hund's Rule?

Back

Electrons will fill degenerate orbitals singly before pairing up.

Front

What is the Pauli Exclusion Principle?

Back

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