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.
Two electrons.
There are 7 electrons in the outer "ring" of bromine.
1
8 all together
A full outer ring, or valence shell, has 8 electrons, except for helium, which has 2 electrons.
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.
1 in the 4s orbital, 19 electrons in all (K has an atomic number of 19)