1.

Distinguish between electron affinity and electron negativity.

Answer»

Electron affinity:

  • It is the tendency of an isolated gaseous atom to gain an electron. 
  • Ills the property of an isolated atom. 
  • It does not change regularly in a period or a group.
  • It is measured in electron volts/atom or kcal/mole or kJ/mole.

Electron negativity: 

  • It is the tendency of an atom in a molecule to attract the shared pair of electrons. 
  • It is the property of bonded atom. 
  • It changes regularly in a period or a group. 
  • It is a number and has no units.


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