Third energy level
3
8
Helium
The period tells you how many energy levels an atom has.
it very easy: whatever row the element is in is the number of energy levels it has. Example: hydrogen in the first row, it has 1 energy level.Read more: How_do_you_find_number_of_energy_levels_in_an_element
7 electrons
Sr has two electrons in the highest occupied energy level
The 3rd energy level is the highest occupied energy level for chlorine with seven electrons.
the period number tells which is the highest energy level occupied by the electrons
the period number tells which is the highest energy level occupied by the electrons
inner shell electrons : the electrons that are not in the the highest occupied energy level .
There are 3 valence electrons in the highest energy level of Nitrogen. Nitrogen has a total of 5 valence electrons.
the period number tells which is the highest energy level occupied by the electrons
8 electrons
inner-shell electrons
3
Eight.
The highest occupies energy level in aluminum is the 3rd energy level. Its electron configuration is 1s22s22p63s23p1.