1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
Rb+1 or Kr
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VanadiumAtomic number: 23Symbol: VAtomic weight: 50.9415(1)Electron configuration: [Ar]3d34s2Group: 5BPeriod: 4
In the atom a proton has the charge +1 and the electron the charge -1.
The neutral atom with 44 electrons is ruthenium (Ru).The electron configuration of ruthenium is: [Kr]4d75s1.The number of electrons in shells is: 2, 8, 18, 15, 1.
In this context, we call an electron a beta particle.
In period 3? It has to be Boron although technically it is not a gas. The electron configuration is either 2, 3 or 1s^2, 2s^2, 2p^1 depending on what level of chemistry you are working at. If the latter looks like a different language you to, go with the first! that is actually wrong above^^, the real answer is argon so its electron configuration is 1s2, 2s2, 2p6, 3s2, 3p6