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 ~ 1 . 5 × 10 – 3 pm size. Reason R: Proton H + always exists in combined form. In the light of the above statements, choose the most appropriate answer from the options given below:

Step-by-step solution

Loss of an electron from a hydrogen atom results in a nucleus of very small size as compared to other atoms or ions. Due to its small size it cannot exist free. Loss of the electron from hydrogen atom results in nucleus size ( H + ) of 1 . 5 × 10 - 3 . A proton is a positively charged subatomic particle that is present in the nucleus of an atom, and it can exist in various forms, including as a part of an atomic nucleus, as a free particle, or as a constituent of a larger particle such as a molecule. H + alway