Question
Among the following electrons, which has highest energy? a. n = 3, l = 2, m = 0, s = + 1/2 b. n = 4, l = 0. m= 0 , s = - 1/2
Ans is A... but how A? Why nOt B?
Ans is A... but how A? Why nOt B?
Answers
DrBob222
Look at the order of filling. That is
1s, 2s, 2p, 3s, 3p, 4s, 3d etc.
So if n = 3 and l = 2, the electrons must be a 3d electron. For n = 4 and l = 0, that's a 4s electron. The 4s is lower energy than the 3d. I think B.
1s, 2s, 2p, 3s, 3p, 4s, 3d etc.
So if n = 3 and l = 2, the electrons must be a 3d electron. For n = 4 and l = 0, that's a 4s electron. The 4s is lower energy than the 3d. I think B.