Electron configuration

[George_Zhu]

Can Ca2+ 's electron configuration be written as [Ar] ?

[Jeril Joseph 1B]

I don't think we can do that. Although they're isoelectronic, they don't necessarily have the same properties because they have a different amount of protons. I believe you would go off of the previous noble gas, which is Neon, and then write the 3s orbital and 3p orbital. So, the configuration would be [Ne] 3s^2 3p^6.

[Brian Kwak 1D]

It depends on the question if they ask for the ‘full ground state’ then you cant use the short hand, but if they don’t then you could write it as [Ar] to represent that it lost the 2 electrons from the +2 charge. If the question states you can use the abbreviation then yes, if not then no.

[simmoneokamoto3K]

No, you would have to write out Ca as a ground configuration initially and then at the very end with your final electron configuration, remove two electrons as appropriate for Ca^2+