MCAT Question A Day - 10/26/14 - Answer!
Compared to an electron with a principal quantum number of 1, an electron with a principal quantum number of 2 will have:
A. a lower energy.
B. a higher energy.
C. a negative spin.
D. a positive spin.
B is correct. The principle quantum number (n) represents the energy level of the electron. The lowest energy shell is n ~ 1. As n increases, the shells move farther from the nucleus and energy increases.
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B is correct. The principle quantum number (n) represents the energy level of the electron. The lowest energy shell is n ~ 1. As n increases, the shells move farther from the nucleus and energy increases.
Want more questions? - Click here to check out our MCAT Question A Day archive
