Atomic hydrogen combaines with almost all elements but molecular hydrogen does not. Explain.

Answer

N/a

Explanation

Atomic hydrogen is highly unstable. Since, the electronic of atmic hydrogen is `1s^(1)`, it needs one more electron to complete its configuration and gain stability. Therefore,atomic hydrogen is very reactive and combines with almost all the elements.
It however, reacts in three different ways i.e,
(i) by loss of its single electron to from `H^(+)`.
(ii) by gain of one electron to from `H^(-)` and
(iii) by sharing its electron with other atoms to form single covalent bonds. In contrast, the bond dissociation energy form H-H bond is very high (`435.88 KJ mol^(-1))`. As a result molecular hydrogen is almost inert at room temperature and hence reactsn only with a few elements.