Answer:
There will be one electron in the second shell
Step-by-step explanation:
The number of electron in a particular shell are given by the formula 2n² where n shows the number of shell.
So according to the formula
1st shell will have 2 electrons
2nd shell will have 8 electrons
Now if total electrons are 3 then 2 will be accommodated in the first shell and the remaining one will go to the second shell.