Question

Hydrogen can be placed both in group 1 and group 7. give three points to support this statement

Answer 1

THE REASON IS MENTIONED BELOW:-
1)THE HYDROGEN ACTS AS A "HYDRIDE ION"(H-) AND "HYDROGEN ION"(H+).

2) THE HYDROGEN ATOM CAN GAIN 1electron TO ATTAIN THE STABILITY OF NOBLE GAS HENCE ITS POSITION SHOULD BE JUST ONE PLACE BEFORE NOBLE GAS HELIUM (He) ATOM. BUT IT ALSO LOSES ONE ELECTRON SO IT CAN BE PLACED AT FIRST POSITION.

3)HYDROGEN IS A NON-METAL HENCE IT SHOULD ALSO PLACED IN A 7th GROUP BUT IT ACTS LIKE A ALKALI METAL NY FORMING HYDROGEN ION.