It's cl-1
It's electron configuration is 2.8.7.
And it need 8 electron for the 3rd shell to be balanced.
So you ionize Cl by adding another electron.
But why is it Cl-1?
Well, because Cl's electron configuration is 2.8.7. As I mentioned...
When you have balanced it to 2.8.8.
You need to -1 to make 2.8.7.
The actual equation looks like "Cl^1-" not "Cl^-1"
I hope this helped your h/w...
It's electron configuration is 2.8.7.
And it need 8 electron for the 3rd shell to be balanced.
So you ionize Cl by adding another electron.
But why is it Cl-1?
Well, because Cl's electron configuration is 2.8.7. As I mentioned...
When you have balanced it to 2.8.8.
You need to -1 to make 2.8.7.
The actual equation looks like "Cl^1-" not "Cl^-1"
I hope this helped your h/w...