Calculate the frequency of photon with energy 3.98 (10*-15)

Explanation

`(igt1)rarr` dissociation of solute particles
`(ilt1)rarr` association of solution particles
Suppose 1 molecule of reactant dissociates to give n molecules or ions of products.
(i) For dissociation
`AhArrB+C+D ….`
`{:("","1 molecule","n molecule/ ions"),("Initial conc",1,0),("Eqm conc",1-alpha,nalpha):}`
`therefore` Number of particles at equillbrium
`=1-alpha+nalpha`
`=1+(n-1)alpha`
Vant Hoff factor, `i=(1+(n-1)alpha)/(1)`

(ii) For association
`nAhArrA_(n)`
`{:("","n molecule/ions","1 molecule"),("Initial conc",1,0),("Eqm conc",1-alpha,alpha//n):}`
Number of particles ar equillbrium `1-alpha+alpha..n=1-((n-1)/(n))alpha`
Vant Hoff factor `i=1-((n-1)/(n))alpha,((n-1)/(n))alpha=1-i`