Question

Which bond is most polar? F-F, F-CI, F-Br, F-I

Answer 1

Step-by-step explanation:

There are 4 bonds between nonmetal atoms.

It is known that if ΔE (electronegativity difference between atoms that form the bond):

ΔE = 0 => non polar

0.4<ΔE<1.7 => polar

ΔE>1.7 => ionic

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Information needed:

The electronegativities of (please, the periodic table is useful here)

F = 3.98

Cl = 3.16

Br = 2.96

I = 2.66

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Procedure:

For F-F) ΔE = electronegativity (F) - electronegativity (F)

ΔE = 3.98 - 3.98 = 0 non polar

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For F-Cl) ΔE = 3.98 - 3.16 = 0.82

For F-Br) ΔE = 3.98 - 2.96 = 1.02

For F-I) ΔE = 3.98 - 2.66 = 1.32

Answer: F-I