8 maximum
The second energy level of atoms can hold a maximum of 8 electrons.
Maximum of 8 electrons in second energy level.
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There are two subshells in the second energy level: 2s and 2p.
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The first and second energy level will hold maximum of 2 and 8 electrons.
The second energy level can hold a maximum of 8 electrons. Magnesium has 12 electrons, so in its second energy level, there will be 8 electrons (2 in the first energy level and 8 in the second energy level).
The second principle energy level is designated as the n=2 energy level in an atom. Electrons in this energy level have higher energy than those in the first energy level. The second energy level can hold up to 8 electrons.
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An atom with seven electrons will have five electrons in the second energy level.
The second energy level of an atom of fluorine will have 7 electrons. This is because the first energy level can hold a maximum of 2 electrons, and the second energy level can hold a maximum of 8 electrons. Since fluorine has a total of 9 electrons, 2 of them will be in the first energy level and 7 will be in the second energy level.