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Q.

Octet is one of the most important criteria to attain stability for most of the elements. How many of the following molecules are hypovalent.A) BeF2  B) NH3   C) BCl3  4) ClF3

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a

1

b

2

c

3

d

4

answer is B.

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Detailed Solution

BeF2 ... 2 bp  around central atom...Hypovalent    NH3... 3 bp+1 lp around central atom ...Electron precise    BCl3 ... 3 bp around central atom ...Hypovalent     ClF3 ... 3 bp +2 lp around central atom...Hyper valent
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