The electronegativity of chlorine is 3.0 while that of iodine is 2.5. The correct way of writing the formula of a molecule composed of one chlorine and one iodine atoms and the corresponding name are ________.

Question

Quizplus · Accepted Answer

The element with the lower electronegativity is usually listed first in the formula, so the correct formula is ICl, which is iodine monochloride. A and B are incorrect because they list chlorine first in the formula. D is incorrect because it uses a nonstandard naming convention.

The Electronegativity of Chlorine Is 3