The structure of the atom

Electrons can only orbit the nucleus at specific distances.

A subatomic particle with no electric charge, found in the nucleus of an atom.

Approximately 1 × 10⁻¹⁰ meters.

Approximately 1 atomic mass unit (amu).

Approximately 1 atomic mass unit (amu).

Approximately 1/2000 atomic mass unit (amu).

+1

0

-1

The number of protons in the nucleus of an atom.

The total number of protons and neutrons in an atom's nucleus.

A charged particle formed when an atom gains or loses electrons.

The process by which an atom gains or loses electrons to become an ion.

Atoms of the same element with the same number of protons but different numbers of neutrons.