The structure of the magnesium atom?
| November 29, 2020 | education
the element magnesium is in the third period of the second group of the main subgroup. the relative atomic mass is 24, the serial number is 12: consequently, magnesium has 12 protons, 12 electrons and 12 neutrons (the ordinal number was conventionally subtracted from the relative atomic mass). on the external energy level, magnesium has two electrons, which provides it with a constant valence.
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