Question

U energy (23) Use this diagram to complete the table below. What is the energy of the electron in the ground state? What is the energy of the electron in the first excited 1 x 5 ? If the electron makes the transition shown by the red arrow, from C to B, will a photon be absorbed or emitted? absorbed emitted Calculate the wavelength of the photon that would be absorbed or emitted. Round your answer to 3 significant digits m

Answer 1

1)

A is the ground state.

Energy there is 250 zJ

Answer: 250 zJ

2)

B is the 1st excited state.

Energy there is 400 zJ

Answer: 400 zJ

3)

Since electron is moving from higher energy state to lower energy state, the photon is released

Answer: emitted

4)

Energy of this transmission = EC - EB

= 800 zJ - 400 zJ

= 400 zJ

= 400*10^-21 J

= 4.00*10^-19 J

use:

E = h*c/lambda

4*10^-19J =(6.626*10^-34 J.s)*(3.0*10^8 m/s)/lambda

lambda = 4.97*10^-7 m

lambda = 497 nm

Answer: 497 nm