What is the mass-to-charge ratio of electrons?

1 Answer
Ernest Z.
Jun 15, 2017

The mass-to-charge ratio #m/e# of electrons is #5.685 × 10^"-12" color(white)(l)"kg/C"#.

Explanation:

Chemists are more likely to talk about the charge-to-mass ratio of electrons.

The charge on an electron is #1.602 × 10^"-19"color(white)(l) "C"#, and the mass of an electron is #9.109 × 10^"-31"color(white)(l) "kg"#.

∴ #e/m = (1.602 × 10^"-19"color(white)(l) "C")/(9.109 × 10^"-31"color(white)(l) "kg") = 1.759 × 10^"-11"color(white)(l) "C/kg"#.

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