The highest occupied energy level in Beryllium is the 2s orbital. Beryllium has 4 electrons, with 2 electrons in the 1s orbital and 2 electrons in the 2s orbital.
A neutral chlorine atom has 17 electrons. In its ground state, the highest occupied energy level for chlorine is the third energy level (n=3), which can hold a maximum of 8 electrons. Therefore, the highest occupied energy level for a neutral chlorine atom contains 7 electrons.
Sodium: Na(2, 8, 1 ) so there is one electron in the highest (3rd) level
2. the number of electrons on the outermost level is always equal to the group number. Barium is group 2 therefore it's outermost energy level contains 2 electrons
The element you are referring to is beryllium (Be). Beryllium is an alkaline Earth metal that has two electrons in the second energy level.
The electronic configuration of chlorine is 2,8,7 So there are 7 electrons in the valence shell (or highest energy level).
The highest occupied energy level of Beryllium is the second energy level, denoted as 2.
2s
The 3rd energy level is the highest occupied energy level for chlorine with seven electrons.
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
2
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.
the period number tells which is the highest energy level occupied by the electrons
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.