How Many Valence Electrons Does Rubidium Have?

One valence electron is placed in the s-orbital of the fifth energy level of rubidium. The electron configuration of rubidium, 1s2 2s2p6 3s2p6d10 4s2p6 5s1, reveals that the element contains a total of 37 electrons.

The chemical symbol for rubidium on the periodic table of elements is Rb. It has an atomic number of 37 and is a member of the alkali metals group. The ionic radius of a rubidium atom is 1.52 angstroms while the atomic radius is 2.98 angstroms. In its most prevalent state, rubidium has 48 neutrons, whereas in its ionic state, it has a +1 charge.


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