Question

Which of the molecule has both a bond pair and lone pair electron?
Select one:
16
O a.
BF3
O b. BeH2
O c. CH4
d. SO2​

Answer 1

Answer:

option D is the right answer

Explanation:

lets draw the structure f the molecules

                     F

• BF3= F-B-F  in this B has 3 valence e-s paired with three e- of each F , so there are only bond pairs no lone pair.(this option is incorrect)

• BeH2=   H-Be-H   in this Be has 2 valence e-s paired with 2 e-s each of H, so in this also there are no lone pair only bond pair(this option is incorrect)

                     H

• CH4=H-C-H, in this 4 valence e-s of C are paired with 4 e-s each of H,

                     H           so there are no lone pairs only bond pairs(this option                                                                                              is incorrect)

• SO2= O=S=O , in this there are 6 valence e-s of S but only 4e-s are paired with 2 O atoms , so it has both lone pair and bond pairs (this option is correct)