2
The 3rd energy level is the highest occupied energy level for chlorine with seven electrons.
The highest occupied energy level of Beryllium is the second energy level, denoted as 2.
Sr has two electrons in the highest occupied energy level
Aluminum has 3 electrons in its highest occupied energy level.
Phosphorus has 5 electrons in its highest occupied energy level.
Xenon has a total of 54 electrons. The highest occupied energy level of xenon is the 5th energy level, which can hold a maximum of 18 electrons. Therefore, on the highest occupied energy level of xenon, there are 18 electrons.
1s
Helium is the noble gas that does not have eight electrons in its highest occupied energy level. It only has two electrons in its outermost energy level.
7 electrons would be in the highest occupied energy level of a 7A element. Group 7A elements have 7 valence electrons, which occupy the highest energy level of the atom.
the period number tells which is the highest energy level occupied by the electrons
2s
8