Question

of hybridization of the central atom is
not the same as in the others :
) B in BF,
2) O in H,O"
) Nin NH 4) Pin PCI,
The number of sp-s sigma bonds in benzene are
2) 6
5) 12
4) none of these
The hybridization of the central atom will change
vhen
1) NH, combines with H
2) H,BO, combines with OH​

Answer 1

Answer:

In BF  

3

​  

, the ground state electronic configuration of Boron is 1s  

2

2s  

2

2Px  

1

. excited state electronic configuration  

is 1s  

2

2s  

1

2Px  

1

2Py  

1

 

One electron from one  

′

s  

′

 orbital and two electrons from  

′

p  

′

 orbital overlaps with  

′

p  

′

 orbital electrons of Flourine to form three sp  

2

 hybridised bonds. So, BF  

3

​  

 has sp  

2

 hybridisation.

Flourine (a)  

But in H  

3

​  

O  

+

,NH  

3

​  

 and PCl  

3

​  

, the hybridisation involves one electron from  

′

s  

′

 orbital, 3 electrons for  

′

p  

′

 orbitals in central orbital forming sp  

3

 hybridisation.

Explanation: