A) \[O>C>N>B\]
B) \[B>N>C>O\]
C) \[O>C>B>N\]
D) \[O>B>C>N\]
Correct Answer: C
Solution :
\[\underset{140.9}{\mathop{O}}\,>\underset{122.3}{\mathop{C}}\,>\underset{83}{\mathop{B}}\,>\underset{0}{\mathop{N}}\,\] 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 IVth A element, this is due to half filled p-orbitals presence.
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