Question

What transition energy corresponds to an absorption line at 527 nm?

A. 2.65 x 10-19 J
B. 3.77 x 10-19 J
C. 5.69 x 10-19 J
D. 3.26 x 10-19 J
SUBMIT

Answer 1

B. 3.77 x 10-19 J

Step-by-step explanation:

It is possible to find the energy that corresponds to a determined wavelength (Absorption line) using the following equation:

E = hc / λ

Where E is energy

h is Planck's constant = 6.626x10⁻³⁴Js

c is speed of light = 3.0x10⁸m/s

And λ is wavelenght = 527x10⁻⁹m

Replacing:

E = 6.626x10⁻³⁴Js*3.0x10⁸m/s / 527x10⁻⁹m

E = 3.77x10⁻¹⁹J

The right option is:

B. 3.77 x 10-19 J