Question

K (potassium) belongs to group IA of the periodic table, and has 1 valence electron. Br (bromine) belongs to VIIA, and has
valence electrons.

Answer 1

Bromine (Br) belongs to group VIIA of the periodic table and has 7 valence electrons.

So, to summarize:

- Potassium (K) has 1 valence electron (Group IA).
- Bromine (Br) has 7 valence electrons (Group VIIA).