The mass of an electron is approximately what?

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Multiple Choice

The mass of an electron is approximately what?

Explanation:
In atomic mass units, the electron’s mass is extremely small compared with nucleons. The electron weighs about 9.11 × 10^-31 kg, and 1 amu is 1.6605 × 10^-27 kg. Dividing gives roughly 5.49 × 10^-4 amu, i.e., about 0.000549 amu. That is close to 1/1837 of an amu, so the electron’s mass is best represented as 1/1837 amu. The other options either use the wrong unit or misstate the magnitude in amu; the kg value is correct but not in the requested unit system.

In atomic mass units, the electron’s mass is extremely small compared with nucleons. The electron weighs about 9.11 × 10^-31 kg, and 1 amu is 1.6605 × 10^-27 kg. Dividing gives roughly 5.49 × 10^-4 amu, i.e., about 0.000549 amu. That is close to 1/1837 of an amu, so the electron’s mass is best represented as 1/1837 amu. The other options either use the wrong unit or misstate the magnitude in amu; the kg value is correct but not in the requested unit system.

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