Respuesta :

Answer:

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

pstnonsonjoku

The polarity of a bond has to do with the difference in electronegativity between the atoms in the bond.

Electronegativity is a periodic property that decreases down the group but increases across the period. This implies that from left to right, atoms of elements become more electronegative. The opposite occurs as you are moving down a group. Therefore;

  • Fluorine is more electronegative than bromine
  • Oxygen is more electronegative than selenium
  • Nitrogen is more electronegative than arsenic

Based on this, the more polar bonds in each pair is as follows;

  • F-Cl bond is more polar than Br-Cl bond
  • H-O is more polar than Se-H
  • N-S is more polar than As-H

Learn more:https://brainly.com/question/17762711

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