The amount of energyreleasedwhenone millionatomsof iodine are completely converted into I^(-) ionsin thevapour stateaccordingto theequationI(g)+ e^(-)to I^(-) ( g) " is" 4.9 xx 10^(-13) J Calculatethe electronaffinity ofiodine in(i) Kj//mol and (ii) in eVper atom.

The amount of energyreleasedwhenone millionatomsof iodine are complete

1.	The amount of energyreleasedwhenone millionatomsof iodine are completely converted into I^(-) ionsin thevapour stateaccordingto theequationI(g)+ e^(-)to I^(-) ( g) " is" 4.9 xx 10^(-13) J Calculatethe electronaffinity ofiodine in(i) Kj//mol and (ii) in eVper atom.
Answer» Solution :Requiredenergy `=0.1 XX 3.36 xx 23.06 =7.748 kcal` Electronaffinity `=6.023 xx 10^(23) xx 4.9 xx 10^(-13) xx 10^(-6)` `=29 .5 xx 10^(4) xx 10^(-3) KJ =295 kJ mol^(-1)` `= 295// 96.49 eV //atom =3.06 eV //atom`