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What is the electronegativity difference for a bond between potassium and iodine?

A. 3.3
B. 0.4
C. 4.6
D.1.7

2 answers

The electronegativity difference between potassium and iodine is 2.7 – 0.8 = 1.9, which is > 1.7. The bonding in KI is predicted to be ionic.
thx
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