Which is more polar: A. [ Select ] Br-Cl or F-Cl B. [ Select ] H-O or Se-H C. [ Select ] As-H or N-S

F-Cl , O-H , N-S

Explanation:

Polarity of a bond is determined by the Electronegativity across the period and its group.

So un the basis of that.

A .Br - Cl  < F-Cl

B .O-H > Se-H

C .As-H < N-S

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons