Question

In which of the following pairs of molecules/ions,
the central atoms have sp2 hybridization?
(1) NO2-, and NH3
(2) BF3, and NO2-
(4) NH2-, and H2O
(3) BF3 and NH2-​

Answer 1

Answer:

the answer is (2) BF3 & NO2- ✓

Explanation:

BF3

connectivity electron of Boron : 3

". ". ". ". of. Florin : 7

this is bf3

so boron's 3 co.electron

and florin's 7×3=21 c.e.

both addition is 24

divide by 8 so 24÷8=3✓

if it comes 3 there is sp² hibridization

same for the NO2-

N's c.e. : 5

O's c.e. : 6

addition: 5+(6×2)+(-ve charge)

:5+12+1(-ve charge is 1)

:18

divide by 8: 2 and the escalated number is 2 that means there is 1 lone pair

2+1 lone p. =3

3 means that there is sp² hibridization✓✓

Answer 2

Answer:

(4) NH2-, and H2O

Explanation:

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