Electrons are ejected from sodium metal by any light that has a wavelength shorter than 544 nm. what is the kinetic energy of an electron (in j) that is ejected from sodium by light with a wavelength of 485 nm?

KE=2.3 x 10⁻¹⁹ J

Explanation:

Given that

λ = 544 nm

λ' = 485 nm

The kinetic energy KE given as

KE= E - Ф

Where

h= 6.626 x 10⁻³⁴

C=3 x 10⁸ m/s

Now by putting the values

KE=2.3 x 10⁻¹⁹ J

This is kinetic energy.

i think it's 35 meters

your answer is, orbit around the nucleus