Question

Instructions:Select the correct answer.
Elements

Electronegativity

aluminum (Al) 1.61
calcium (Ca) 1
carbon (C) 2.55
chlorine (Cl) 3.16
fluorine (F) 4
hydrogen (H) 2.2
iron (Fe) 1.83
nitrogen (N) 3.04
oxygen (O) 3.44
phosphorus (P) 2.19
potassium (K) 0.82
silicon (Si) 1.9
sulfur (S) 2.58
Use the chart to determine which is an example of a highly polar covalent bond.

Ca – Cl
Fe – O
H – S
F – F

Answer 1

Answer:-

Ca-Cl

Explanation:-

The more the difference in electronegativity more the polar bond.

In case of Ca-Cl the difference = 3.16 - 1= 2.16

It is more than all the other combinations given.

Hence Ca-Cl is the most polar covalent bond.