Based on electronegativity values, which bond has the highest degree of ionic character:

H--S

Si--Cl

Cs--Br?

1 answer

Ionic bonds tend to have an electronegativity difference ranging from 1.7-4.0. Looking on the periodic table, we can determine the ionic bonds.
H--S
2.2--2.58 (difference of 3.8)

Si--Cl
1.9--3.16 (difference of 1.26)

Cs--Br
0.79--2.96 (difference of 2.17)
Therefore, it would be the Cesium and Bromine bond that would be the most ionic.