Ncert Exercises & Solutions

Which of the following statements is correct?

a. Hydrides of group 13 act as Lewis acids

b. Hydrides of group 14 are electron deficient hydrides

c. Hydrides of group 14 act as Lewis acids

d. Hydrides of group 15 act as Lewis base

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

All elements of group 13 will form electron-deficient compounds which act as Lewis acids.

All elements of group 14 will form electron precise compounds.

Electron-rich hydrides have excess electrons which are present as lone pairs. Elements of groups 15-17 form such compounds. NH₃ has 1-lone pair,

H₂O-2 and HF-3 lone pairs act as Lewis bases.