The possible ion that has the configuration 1s²2s²2p⁶3s²3p⁶ is Chlorine Ion.
The given electronic configuration is 1s²2s²2p⁶3s²3p⁶.
First let us count the number of electrons in this atom.
The number of electrons are (2+2+6+2+6)
Total electrons = 18 electrons.
As we can see,
The outermost orbital 3p6 is full. It can only accept one electron.
It means that in the ground state.
The configuration of the species should have been,
1s²2s²2p⁶3s²3p⁵.
Now, as per the electronic configuration. The atom is chlorine.
So, the ion with the given electron configuration should must be chlorine ion.
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