For the gaseous reaction `K + F rarr K^(+) +F^(-), Deltah` was calculated to be `18.4` kcal/mol
Channel: Doubtnut
Date: 2020-04-12

For the gaseous reaction `K + F rarr K^(+) +F^(-), Deltah` was calculated to be `18.4` kcal/mol under conditions where the cations and anions were preverted from combining with each other. The ionisation enthalpy of `K` is 4.3 eV/atom. What is the electron gain enthalpy of F (in eV)? If your answer is `x` report it as `-2x`.