Match the correct atomic radius with the corresponding element.

Element

Atomic radius (pm)

A.

Be

i. 

74

B.

C

ii. 

85

C.

O

iii.

112

D.

B

iv. 

77

E.

N

v. 

66

Codes :

Options:  A   B   C   D   E 
1.   i  ii  iii  iv  v
2.  iii   iv  v   ii  i
3.  iv  ii  iii   i  v
4.  v  ii    i   iii   iv



Hint: Left to right size decreases and top to bottom it is increases

Across the period left to right atomic size decreases because the effective nuclear charge is increases. All given elements in the order of their atomic size is as follows:

Be > B >C > N > O

Hence, option second is the correct answer 
 

Be

112

B

85

C

77

N

74

O

66