1 in the 4s orbital, 19 electrons in all (K has an atomic number of 19)
Sodium has one electron in its outer ring.
8 all together
They have seven electrons in their outer shell they are in group seven on the periodic table.
A shell model is an electron configuration. The shell model for Potassium has two electrons on the first ring, eight on the second ring, eight on the third ring, and one on the fourth ring.
The atom wants to have eight or full electrons in its outer valence ring... so if it has four electrons in its outer shell it has the choice of loosing four electrons or finding four electrons somewhere else (whichever is the easiest for it to bond with).
Flerovium has 4 electrons in the outer shell.
Sodium has one electron in its outer ring.
Two electrons.
There are 7 electrons in the outer "ring" of bromine.
8
1
The outer ring of electrons, or the valence electrons.
Helium has only two electrons with one ring (or energy level). Both the electrons are in the one and only energy level / shell / ring.
8 all together
8 all together
A full outer ring, or valence shell, has 8 electrons, except for helium, which has 2 electrons.
Cesium has one valence electrons in its outer ring, as indicated by its placement in column 1 of a wide form periodic table or column IA of a narrow form periodic table.