How many valence electrons does an atom of rubidium (Rb atomic number 37) have? A.One B.Five C.Six D.37
2 answers:
Rubidium has one valence electron, which is located in the s-orbital of the atom's fifth energy level. So the answer is A. One.
Electronic configuration of Rb: 2.8.8.8.8.3
Valence electron is 3....
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