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Match List-I with List-II.
(List-I
(Element) (List-II
(Atomic radii in pm)
A) O I) 88
B) C II) 74
C) B III) 66
D) N IV) 77
Choose the correct answer from the options given below:
A B C D
1. IV III II I
2. I IV III II
3. III IV I II
4. II I IV III

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answer is C.

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Detailed Solution

As we move across the period from left to right, atomic radius decreases due to increase in nuclear charge.

(a)	O	(iii)	66pm
(b)	C	(iv)	77pm
(c)	B	(i)	88pm
(d)	N	(ii)	74pm

B >C>N>O

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