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Q.

Which one of the following molecule obeys octet rule ?

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a

SF₆

b

BF₃

c

PCl₅

d

H₂O

answer is D.

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Detailed Solution

SF₆ – 12 valence electrons around central atom — Hyper valent ;

BF₃ – 6 valence electrons around central atom — Hypo valent ;

PCl₅ – 10 valence electrons around central atom — Hyper valent ;

H₂O – 8 valence electrons around central atom — Obeys octet rule ;

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