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Just In Time Question 11: Prof. Marcia Grail is performing a complex quantum mec

ID: 2304325 • Letter: J

Question

Just In Time Question 11: Prof. Marcia Grail is performing a complex quantum mechanical calculation attempting to ascertain an atomic transition she can exploit for a new death ray. Specifically, she calculates that the ideal emission photon she desires can be obtained in the sition from the 6s2 state of Calcium to the 2d11 state, having been awake for nearly 72 hours straight of plotting. Her robotic assistant, Codex, helpfully points out that she has made a mistake, thus earning a new dent in her chassis and several new swear words for her dictionary file. What are at least two problems with the transition she chose?

Explanation / Answer

Calcium has only 4 shells. So there are no electrons in the 6 s2 state

Also, the 2 d 11 state does not exist because

1) n = 2 shell only has s and p subshells

2) and the d subshell can hold a maximum of 10 electrons.