What is the mass of all electrons in a carbon atom?

univerkov | September 20, 2021 | education

The ordinal number of a carbon atom in the periodic system of Mendeleev is 6. This means that it has a nucleus charge + 6 (it is created by six protons), and there are 6 electrons in the electron cloud around the nucleus. In general, the atom is neutral.
The mass of one electron is Me = 9.10938356 * 10 ^ -31.
The mass of six electrons is M = 6 * Me = 6 * 9.10938356 * 10 ^ -31 kg = 5.46 * 10 ^ -30 kg.
Answer: 5.4 * 10 ^ -30 kg.

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