NTA Abhyas JEE Main2020Chemistrys Block ElementsPractice
Among C a H 2 , N H 3 , N a H a n d B 2 H 6 , which are covalent hydride?
Options
- AN H 3 a n d B 2 H 6
- BN a H a n d C a H 2
- CN a H a n d N H 3
- DC a H 2 a n d B 2 H 6
Correct answer
A. N H 3 a n d B 2 H 6
Step-by-step solution
Hydrides are binary compounds of hydrogen. These can be classified in four groups viz : (i) Ionic hydrides e.g., N a H , C a H 2 , L i H e t c . (ii) Covalent hydrides e.g., B 2 H 6 , N H 3 , S b H 3 e t c . (iii) Polynuclear hydrides e.g., L i A l H 4 , N a B H 4 e t c . (iv) Interstitial hydrides, in which hydrogen is trapped in the interstial spaces of transition metals.