How does the size change when an atom forms a cation and when an atom forms an anion?

Question

Chemistry

Edwin Pearson

20 September, 18:10

How does the size change when an atom forms a cation and when an atom forms an anion?

+4

Answers (1)

Know the Answer?

Stanley Holloway · Answer 1

A cation is an atom that loses a valence electron. When a valence electron is released there is one electron less to create a repulsive force. The loss of a repulsive force will allow the atom to pull tighter together. An anion would therefore be larger in size due to increased repulsion of the valence electrons.