Eight.
In the second energy level of an atom, there can be a maximum of 8 electrons. Magnesium has 12 electrons in total, with 2 electrons in the first energy level and 8 electrons in the second energy level.
An atom with seven electrons will have five electrons in the second energy level.
A boron atom has three electrons in its second energy level.
Maximum of 8 electrons in second energy level.
In the second energy level, eight electrons are allowed at most.
there are eight electrons.
The second energy level of atoms can hold a maximum of 8 electrons.
The second energy level contains eight valance electrons when it's full.
Argon has 2 electrons in the first energy level, 8 electrons in the second energy level, and 8 electrons in the third energy level.
8 electrons
9
eight!!