Chapter 18, Problem 18.31P

Interpretation Introduction

Interpretation:

The energy difference between ${\text{S}}_{\text{1}}\text{and}{\text{T}}_{\text{1}}$ states of formaldehyde has to be calculated.

Concept introduction:

Plank-Einstein relation:

The relationship between $\text{E}\text{,}\text{h}\text{and}\text{ν}$ is given by Plank-Einstein equation

$\begin{array}{l}\text{E}\text{=}\text{hν}\text{=}\frac{\text{hC}}{\text{λ}}\\ \text{where,}\\ \text{E}\text{-}\text{energy}\\ \text{h}\text{-}\text{plank}\text{constant}\\ \text{ν}\text{-}\text{frequency}\\ \text{C}\text{-}\text{speed}\text{of}\text{light}\text{and}\text{λ}\text{-}\text{wavelength}\text{.}\end{array}$