Depends on the atom. Between one and eight electrons. There is a method to it. The elements on the very two first rows have one (H) and two (He). Over on the right side
(Boron) of the elemental chart are three to eight electrons respectively.
Nitrogen has 5 electrons in its outer shell, and Bromine has 7 electrons in its outer shell.
Uranium has 2 electrons on its outer energy level.
Boron has 3 electrons in it's outer level.
Vanadium has 5 electrons in its outer energy level.
7Fluorine has 7 electrons in the outer level.
10 electrons
Iodine has 7 electrons in its outer energy level.
Mercury has 2 electrons in its outer level, which is the 6th and final energy level for mercury.
There are 8 electrons in the outer energy level of xenon. Xenon belongs to the noble gas group on the periodic table, which have a full outer energy level with 8 electrons.
Magnesium has 2 electrons on its outer energy level.
There are three electrons in boron's outer energy level.
Sulfur has 6 electrons in its outer energy level. This means it needs 2 more electrons to fill its outer energy level, for a total of 8 electrons.