In what respects does hydrogen resemble alkali metals ? How does it resemble halogen ?

Explanation

i. Resemble with alkali metals:
1. It has one valence electron in s-orbital like alkali metals.
2. It can lose one electron to from H ion like alkali metal.
3. It is liberated at cathode during electrolysis of compounds like `H_(2)O` HCI etc.
4. It shows + 1 oxidation state like alkali metals.
5. It is a strong reducing agent like other metals.
ii. Resemblance with halogen :
1. Hydrogen is non-metal like halogens.
2. Hydrogen froms diatomic molecule like halogens.
3. It has ionization energy high like halogens.
4. Its electronegativity is similar to halogens.
5. It can gain one electron to from H - ion.
6. When NaH is electrolysed, hydrogen is liberated at anode like halogens.