Which of the following electron configurations of neutral atoms represent excited states?
1s^2 2s^2 2p^6 3s^2 3p^6 3d^2
Which neutral atoms have the following electron configurations? Enter the name or symbol.
I'll give you a hint for 1.
Look at the last one. It must be excited since the ground state would be 1s2 to start. Look at the one before that. It has 5s1 + others but 5s2 is the ground state. There may be others there.
#2. Count the electrons. For the first one I count 18 + 2 + 3 = 23. Which element is #23. That's V isn't it.posted by DrBob222