1.

Why are the electron affinities of IIA group and IIB group elements less than zero?

Answer»

SOLUTION :(i) electronic configuration of II A and II B
(ii) CHANGE in ENERGY that takes place due to the
ADDITION of electron to the neutral ATOM of the
elements belonging to the Groups IIA and IIB
(iii) relation between change in energy and electron
affinity values


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