The value of delta for the [c_rf_6]^3- complex is 182 kj/mol. calculate the expected wavelength of the absorption corresponding to promotion of an electron from the lower-energy to the higher-energy of orbital set in this complex. (remember to divide by avogadro's number.) should the complex absorb in the visible range?

 Yes the absorb in the visible range.

Explanation:

The relationship between wavelength and energy of the wave follows the equation:

where,

= energy of the wave  = 182 kJ/mol  = 182000 J/mol

N = avogadro's number =  

h = plank constant =

c = speed of light =

= wavelength of the wave = ?

Putting all the values:

The wavelength range for visible rays is 400 nm to 750 nm, thus the complex absorb in the visible range.

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