Ncert Exercises & Solutions

The group that has hydride formed by only one member is -

1. 6

2. 7

3. 8

4. 9

Hint: Ony chromium form hydride

Many transitions and inner transition metals of d-block form black powdery,

metallic or interstitial hydrides on reacting with

hydrogen. However, the metals of groups 7, 8 and 9 do not form hydrides at all.

Even from group 6, only chromium forms hydride (CrH).