Question

What do you understand by – 

1. Electron-deficient 

2. Electron-precise 

3. Electron-rich compounds of hydrogen? 

Provide justification with suitable examples.

Answer 1

1. Electron deficient hydrides: Compounds in which central atom has incomplete octet, are called electron deficient hydrides are electron deficient hydrides 

For example, BeH₂ , BH₃

2. Electron precise hydrides: Those compounds in which exact number of electrons are present in central atom or the central atom contains complete octet are called precise hydrides are precise hydrides.

For example, CH₄ , SiH₄ , GeH₄ etc

3. Electron rich hydrides: Those compounds in which central atom has one or more lone pair of excess electrons are called electron rich hydrides. 

For example, NH₃, H₂O.