Questions
Which of the following species has the highest electron affinity?
detailed solution
Correct option is D
The correct option is D.
Energy is released when an electron is added to the atom. Hence 1st electron affinity is always taken as negative. The addition of a second electron to the negatively charged ions is opposed by Coulombic repulsion, hence energy has to be supplied for the addition of the second electron. Hence is taken as positive.
The addition of an electron to and ions will involve repulsions, hence their will be positive.
Due to the stable fully filled configuration, it has a lower value of electron affinity . Hence has the highest electron affinity.
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