0
The electronegativity of Co is 1.9
The electronegativity of S is 2.6
The difference in electronegativities is 2.6 - 1.9 which = 0.7
Generally, the type of bond is characterized by the electronegativity difference according to the following:
electronegativity difference: 4.0 1.7 0.3 0.0
|-----ionic-----------|--polar--------|-nonpolar| Yes CoS is an ionic compound.
A compound which is formed by a metal (such as cobalt) and a nonmetal (such as sulfur) is an ionic compound.
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