1s2 2s2p6 3s2p6d10 4s2p6 5s1
[Kr] 5s1
Rubidium (Rb) has a +1 ion, will have the same electron configuration as krypton (Kr) because the +1 status means it has lost an electron. The configuration is written 1s22s22p63s23p64s23d104p6.
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1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 Rb+1 or Kr
Rb has the electronic config. of = [Kr] 5s1
1s2 2s2p6 3s2p6d10 4s2p6 5s1
In the Rb atom, the electron configuration is [Kr]5s^1. This means there is 1 electron in the 5s sublevel of the Rb atom.
The charge for Rubidium (Rb) is typically +1, as it tends to lose one electron to achieve a stable electron configuration.
[Kr]5s1 would be the noble gas electron configuration for Rb.
Rubidium (Rb)
Rubidium is a metal element. There are 37 electrons in a single atom.
Na, Rb, Al3+, and S2- do not have a noble gas configuration as they do not have the complete outer shell of electrons like a noble gas. O2, Br, Ca, and O2- have noble gas configurations as they either have a complete outer shell of electrons or have gained/lost electrons to achieve a stable noble gas configuration.