Cations and Anions

Cations and Anions - atomic radius is smaller than in the...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Cations and Anions Cations and anions do not actually represent a periodic trend in terms of atomic radius, but they do affect atomic radius, and so we will discuss them here. A cation is positively charged, meaning that it is an atom that has lost an electron or electrons. The positive charge of the nucleus is thus distributed over a smaller number of electrons and electron-electron repulsion is decreased, meaning that the electrons are held more tightly and the
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: atomic radius is smaller than in the normal neutral atom. Anions, conversely, are negatively charged ions: atoms that have gained electrons. In anions, electron-electron repulsion increases and the positive charge of the nucleus is distributed over a large number of electrons. Anions have a greater atomic radius than the neutral atom from which they derive....
View Full Document

This note was uploaded on 11/14/2011 for the course CHEM ch 101 taught by Professor - during the Fall '10 term at Montgomery.

Ask a homework question - tutors are online