The complex ion, [Ni(NH3)6]2+, has a maximum absorption near 580 nm. Calculate the crystal field splitting

Question

energy (in kJ/mol) for this ion.

Answer 1

Calculate E from the wavelength, w.
E = hc/w which is E/ion
Then convert to kJ/mol
J/ion x 6.02E23 J/mol and convert to kJ/mol.

Answer 2

485 kJ/mol

Answer 3

206 kJ/mol