Does an atom contain three electrons in the outer electron layer?
| November 29, 2020 | education
How many electrons in the outer electron layer can be understood from the periodic table.
All elements of the main subgroup have the same number of electrons at the outer level, and it is equal to the group number.
Therefore, 3 electrons on the outer electron layer contain atoms of the 3 main subgroup: B, Al, Ga, In, Tl
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