Mass of an electron

Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).

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Alex Uy 2D
Posts: 23
Joined: Sat Jul 09, 2016 3:00 am

Mass of an electron

Postby Alex Uy 2D » Wed Sep 28, 2016 9:06 pm

On page 43 of the course reader it talks about the photoelectric effect and the equation for kinetic energy (Ek=1/2 me-*ve-). I was wondering if the mass of an electron is the same no matter what element is given.

Garrett_Reynolds_1D
Posts: 21
Joined: Fri Jul 15, 2016 3:00 am

Re: Mass of an electron

Postby Garrett_Reynolds_1D » Wed Sep 28, 2016 9:25 pm

Yes, the mass of an electron of any element is always the same. That mass is 9.10938356 × 10-31 kilograms. Hope that helps!

divya_devineni_2E
Posts: 34
Joined: Wed Sep 21, 2016 2:59 pm
Been upvoted: 1 time

Photoelectric Experiment

Postby divya_devineni_2E » Wed Sep 28, 2016 10:25 pm

Does anyone know the difference between binding energy and threshold energy?

veeksha25
Posts: 29
Joined: Wed Sep 21, 2016 2:56 pm

Re: Mass of an electron

Postby veeksha25 » Fri Oct 07, 2016 7:15 pm

Binding energy is the energy that bounds the electron to the metal. The threshold energy is the minimum energy necessary to eject an electron from the metal surface.


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