Classification Of Elements And Periodicity In Properties Question 314
The correct order of electron affinity of B, C, N, O is O > N > C > B [MP PET 1997; J & K 2005]
Options:
A) $ O>C>N>B $
B) $ B>N>C>O $
C) $ O>C>B>N $
D) $ O>B>C>N $
Show Answer
Answer:
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 VA group elements is less than that of IVA group elements, this is due to half filled p-orbitals presence.
BETA
