Question

Find out total number of molecular species in which central atom carries only two lone pairs
NH, SF4, CIF ICI, XeF2, XeF5, CH3, Tefs, BrF2​

Answer 1

Answer:

sorry if it dosent complete ur whole answer i dont remember the rest

Explanation:

1) In SF  

4

​  

, the central S atom has 6 valence electrons, out of which 4 are involved in the formation of 4 S−F bonds. The remaining 2 electrons are present as a lone pair.

(2) In CF  

4

​  

, the carbon atom has 4 valence electrons, all of which are involved in the formation of bonds with four F atoms. Hence, no lone pairs are present.

(3) In XeF  

4

​  

, the Xe atom has 8  valence electrons out of which 4 are involved in the formation of bonds with four F atoms. Hence, two lone pairs are present.

(4) In BF  

4

−

​  

, the B atom has 4 valence electrons all of which are involved in the formation of bonds with four F atoms. Hence, no lone pairs are present.