Question

Arrange H+, H, H- in decreasing order of their size​

Answer 1

Answer:

H-, H, H+

Explanation:

It is because, when H loses one electron from its valence shell, it becomes H+ and smaller in size than H. Whereas when H gains one electron, it becomes H-, it becomes bigger than H.

Hope it helps you.

Answer 2

Explanation:

H(-) >H >H(+), Hydride ion is bigger than H because of repulsive force between two electrons and H(+) ion is smallest because it is nothing but proton.