1.

Which of the molecule has both a bond pair and lone pair electron?Select one:16O a.BF3O b. BeH2O c. CH4d. SO2​

Answer»

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)


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