Question

Mention similarity of properties of hydrogen with one property of Group 1 elements and two peoperties of Group 17 elements.​

Answer 1

I

Explanation:

I just wanted points to answer for exam

Answer 2

Explanation:

The similarities between hydrogen and halogens: (a) In both cases, one electron is required to complete its valence shell. (b) Hydrogen, as well as halogen, are non-metals. (c) When they are combined with metals, they act as negative ions.