Question

Which molecule will have maximum internuclear distance?

• A. $CsI$
• B. $CsF$
• C. $LiF$
• D. $LiH$

Answer 1

The correct option is A $CsI$

The ionic character of an element is determined by its electronegativity. Fluorine has maximum electronegativity while iodine has the minimum which means the power of attraction in the ionic bond of $CsI$ is minimum so they have a maximum distance between their molecules.