Ca2+ Electron Configuration

What is the condensed electron configuration of Ca2 + ion? 3

Also known as throttle setting for some people.

For electron configuration I have Ca2 +: 1s 2 2s 2 2p 6 3s 2 3p 6 and I am wrong when I try to answer with 3s 2 3p 6. So I asked someone to give me the correct answer and explain if possible.

In the L-gas configuration, all the electrons in the corresponding L-gas configuration are represented as square gas.

Any extra electrons (but subsequent gas-L) produced after the gas-L setup are usually recorded.

For example, the Ca 2 + gas condensate setting is correct.

[Arkansas]

That is, Ca 2 + has the same electron configuration as Ar

If you do, it will happen

[Air] 4s2

Ca2+ Electron Configuration