Question

Find the odd one out
1,
He, Ne, H, xe-
2. si, K, Sb, B-
3. CI, O, Br, In
4 ca, Ba ,S,Sr-​

Answer 1

$\huge \boxed{answer}$

1. xe -

2. B-

3. Br

4. S

$\huge \: thank \: you$