Answer :

dheeerajbolisetti
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.
metalic and non metalic character are the characters of metal and non metals such that lustre ,ductility,hardness etc
poojan
The change in energy of a neutral atom which is in gaseous state when an electron is added to the atom to form a negative ion is called Electron Affinity.
Metallic and non metallic characters of the metals and non metals such as ductility, lustre etc.

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