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Question

Unit of electron affinity is
  1. N
  2. Kj/mol
  3. eV
  4. W

A
N
B
Kj/mol
C
eV
D
W
Solution
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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,

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