Question

MF, MCl, MBr, MI (ionic character)

Hint:

The ionic character of halide bonds decreases with the increase in size of the halide ion, leading to weaker ionic bonds in larger halide ions.

Answer 1

Order of Decreasing Ionic Character: The ionic character of compounds formed between metals (M) and halogens is largely determined by the electronegativity difference between the two elements. As you move down the halogen group, their electronegativity decreases, which in turn reduces the ionic character of the bond they form with metals. Consequently, the ionic character diminishes from fluoride to iodide. \[ \text{MI} < \text{MBr} < \text{MCl} < \text{MF} \]