14 3.4 Electron affinity versus electronegativity
1Meaning
Electron affinity
- Energy change when a free gaseous atom gains an electron
Electronegativity
- Tendency of an atom in a bond to attract the bonding electrons
2State of the atom
Electron affinity
- Isolated atom in elementary state
Electronegativity
- Atom combined with other atoms
3Expressed by
Electron affinity
- Energy (kJ/mol)
Electronegativity
- Relative number without units
4Regularity
Electron affinity
- Irregular trend
Electronegativity
- Regular trend