JEE Advanced levelOne or more correct optionsDifficulty 3 of 3rx054
Use the electronegativity order F>Cl>Br>I. In which compounds does the first-named halogen have oxidation number +1? Select all correct options.
AICl
BBrCl
CClF
DIFX7
Answer: A, B, C
In each diatomic interhalogen the more electronegative atom takes −1: I is +1 in ICl, Br is +1 in BrCl, and Cl is +1 in ClF. In IFX7, seven F at −1 make I +7.