Question
Chemistry Question on Atomic Structure
Calculate the energy in joule corresponding to light of wavelength 45 nm:
(Planck’s constant h = 6.63 × 10-34 Js; speed of light c = 3 × 108 ms-1)
A
6.67 × 1011
B
4.42 × 10-15
C
4.42 × 10-18
D
6.67 × 1015
Answer
4.42 × 10-18
Explanation
Solution
The correct option (C): 4.42 × 10-18.