Greetings,
Studying for an exam, thought I had a good grasp on the subject, did not get the same answer as the answer key
Question
" The four quantum numbers for the last electron placed in element Re"
I found the answer to be 5 2 2 1/2
The answer key says 4 2 0 1/2
I am confused, can some one either tell me I am correct or the answer key is correct, thanks so much