Which one has greater ionisation potential
greater electron affinity?
(a) I or I
(b) B or C
(c) Li or Li
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Answer:
(a) I or I
Explanation:
The correct order of radii is (a), i.e., Ca > Ca+ > Ca2+.
This is because due to the loss of electron, the effective nuclear charge per electron increases, the electrons are more strongly attracted and pulled towards the nucleus. This causes a decrease in the size of the positive ion.
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