Hydrogen

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Loss of electron from hydrogen atom results in nucleus of \(\sim 1.5 \times 10^{-3} \mathrm{pm}\) size.

Reason R : Proton \(\left(\mathrm{H}^{+}\right)\) always exists in combined form.

In the light of the above statements, choose the most appropriate answer from the options given below: