The energy emitted when an election is added to a neutral atom or molecule. By extension, it is also the energy needed to remove an electron from a singly charged negative ion.

Electron Affinity

- electronegativity
- ionization energy
- electron affinity
- atomic radii
- ionic radius
- metallic / nonmetallic character
- chemical reactivity

Calvin College

A table showing all the known chemical elements. It is structured around periodic trends, and arranged according to atomic number, electron configuration, and chemical properties.

Modern 18-Column Table:

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