The correct order of electron affinity of B,C,N,O is
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a
O>C>N>B
b
B>N>C>O
c
O>C>B>N
d
O>B>C>N
answer is C.
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Detailed Solution
O140.9>C122>B83>N Value of electron affinity increases on going from left to right in periods but the value of electron affinity of Vth A elements is less than that of IVthA element, this is due to half filled p-orbitals present