Q. 19

Which of the foll

Answer :

When a hydrogen atom loses an electron, it forms a cation H+. But it is not at all stable to exist freely. The reason why any atom or molecule is formed is because the ionic forms cannot remain stable.

When H+ ion is formed, the size of the ion is very small (near about 10-3 pm. The normal atomic and ionic sizes vary from 50 to 230pm. Due to which, it cannot exist freely and it has to be always associated with other atoms or molecules to get stability.

Hydrogen exists as a diatomic molecule like H2 and has only one electron in the valance shell.

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