The electron affinity of iodine is 4.9 × 10-19 J / atom. The electron gain enthalpy of iodine in eV per atom is.

Question

The electron affinity of iodine is 4.9 × 10-19 J / atom. The electron gain enthalpy of iodine in eV per atom is. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Electron affinity =4.9 × 10-19 J / atom ∴ Electron gain enthalpy =-4.9 × 10-19 J / atom Now, 1 eV =1.6 × 10-19 J ∴ Electron gain enthalpy =-4.9 × 10-19 J / atom × (1 eV /1.6 × 10-19 J ) =-3.06 eV / atom

Q. The electron affinity of iodine is 4.9×10−19J/ atom. The electron gain enthalpy of iodine in eV per atom is___.

Electron affinity =4.9×10−19J/atom ∴ Electron gain enthalpy =−4.9×10−19J/atom Now, 1eV=1.6×10−19J ∴ Electron gain enthalpy =−4.9×10−19J/atom×1.6×10−19J1eV​ =−3.06eV/atom

Q. The electron affinity of iodine is $4.9 \times 1 0^{- 19} J /$ atom. The electron gain enthalpy of iodine in $e V$ per atom is___.