Question

ch4 nh3 h2o and hf are the examples of which hydride​

Answer 1

Answer:

Covalent hydrides

Explanation:

i hope this helps you yu should better study rather than asking here but its good you cleared your doubt

Answer 2

$CH_4$ is electron precise hydride and the rest are electron-rich hydrides.

Explanation:

If we see, the given examples:

• In $CH_4$ carbon forms, four bonds with hydrogen atoms and no electrons are deficient or extra. So it is an electron precise hydride.
• In $NH_3$ nitrogen forms, three bonds with hydrogen atoms and one pair of electrons are present as lone pairs. So it is an electron-rich hydride.
• In $H_2O$ oxygen forms, two bonds with hydrogen atoms and two pairs of electrons are present as lone pairs. So it is an electron-rich hydride.
• In $HF$ fluorine forms, one bond with a hydrogen atom and three pairs of electrons are present as lone pairs. So it is an electron-rich hydride.