How many outer electrons does Rb have?

Answer 1

It outermost electron in Krypton is 4s1 so the quantum number set is:

n l ml ms

4 0 0 1/2

n= principal quantum number

l- angular shapes of the lob

ml- orientation of the lobe

ms- magnetic spin of the lobe , which always alternates between the values 1/2 and -1/2

Note that the quantum number l is always zero for the s orbital because there are only one subshell.

Answer 2

n= 5

l= 0

ml=0

ms=1/2

Answer 3

This is a chemical element. You can find the how many electron in a single atom by using a Periodic Table.

Answer 4

Rubidium has one valence electron.