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Which of the following best characterizes a covalent bond?

Aoccurs when elements have opposite electrical charge
Boccurs when elements have very different electronegativity values
Coccurs when atoms have similar tendencies to attract electrons and share electrons between them
Doccurs when atoms are of the same size

Verified Answer :

Greenleafable

A covalent bond C. occurs when atoms have similar tendencies to attract electrons and share electrons between them.
A refers to ionic, not covalent bonds. D is incorrect because the size of the atoms is irrelevant. Electronegativity values are also not that important, so B is also not correct.

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