Question

Fluorine does not form any polyhalide as other halogens because:

• A. it has maximum ionic character
• B. it has low $F-F$ bond energy ($38.5kcalmo{l}^{-1}$)
• C. of the absence of d-orbitals in the valence shell of fluorine
• D. it brings about maximum coordination number in other elements

Answer 1

The correct option is C of the absence of d-orbitals in the valence shell of fluorine

Due to the absence of $d$-orbital, $F$ can not expand its valency and does not form polyhalide like $Br$ and $I$. Example: ($I{F}_7$)