Question

An electron initially in a 4p state decays to a lower energy state. Which energy state...

An electron initially in a 4p state decays to a lower energy state. Which energy state is forbidden?

a) 3d

b) 2p

c) 1s

d) 2s

Please explain why. thank you

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Homework Answers

Answer #1

According to the given problem,

Ans: b) 2p orbital

Reason:

Using the Selection Rules for Electron Transitions,

1.) ?l = +/- 1 and 2.) ?m = 0, +/- 1 and all other are forbidden transitions

These rules demand conservation of angular momentum. Since a photon carries an intrinsic angular momentum of 1

I hope you understood the problem, If yes rate me!! or else comment for a better solution.

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