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30-06-2018
Chemistry

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How many protons, neutrons, and electrons are there if manganese has an atomic number of 25, a mass number of 55, and a charge of +6?

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SupernovaSonntag SupernovaSonntag

30-06-2018

Mn has 25 protons.

Normally, it would also have 25 electrons. However, a charge of +6 indicates that it has 6 less electrons. Thus, this ion has 19 electrons.

The number of neutrons is the mass number-the number of protons = 30 neutrons.

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