[dipndots]

Can someone explain planck's quantization of energy to me? I am so confused as to what E=nhv means. Thanks.

[ARGOS++]

Dear Dipndots,

For the “Planck’s Constant” you may read:

“Planck’s Constant” (Wiki)

And for the Calculation you may read the Forum-Question:
 

“Frequency of Radiation”

Therein ΔE is the Energy Difference between two states of the molecule.
One State is usually the "Ground State", and so the Energy corresponds with a given Wavelength of Absorption in the Spectrum.

I hope it may be of help to you.

Good Luck!

                    ARGOS⁺⁺