A Cu2 complex has a maximum absorption at 609 nm Calculate i

A Cu2+ complex has a maximum absorption at 609 nm. Calculate in units of J/ion.

wavelength = 609 nm

h = planks constant = 6.625 x 10^-34 J.sec

C = light velocity = 3 x 10^8 m/s

E = h C / lambda

= 6.625 x 10^-34 x 3 x 10^8 / 609 x 10^-9

= 3.26 x 10^-19 J

energy = 3.26 x 10^-19 J/ion