Question

solve this or simply tell me the formula​

Answer 1

wavelength = 580 nm

wavenumber = 1/ wavelength

Wavenumber = 1/580× 10 power(

-9)

this gives

wavenumber = 0.00172 × 10 power(9)

Hence,

wavenumber = 1.74× 10 power(6)

so option B is correct. hope it helped you.....good night!!