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Question

Which of the following species are hypervalent ?
(I) ClO−4 (II) BF3 (III) SO2−4
(IV) CO2−3

A
III and IV
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B
I and II
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C
I, II and III
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D
I and III
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Solution

The correct option is D I and III
Explanation :
Compounds or ions whose lewis structure has more than 8 electrons around atleast one of the atoms are called hypervalent.

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