Question

Unit of electron affinity is

• A. N
• B. Kj/mol
• C. eV
• D. W

Answer 1

The correct option is B Kj/mol

N-Unit of Force
Kj-Unit of energy
eV- Unit of e.m.f
W-Unit of work function
Kj/mol-Unit of electron affinity
Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. It is usually reported as the energy per mole of atoms (in units of kilojoules per mole). For example,

The negative sign shows that energy is released when a Chlorine atom gains an electron.