We’re being asked to find which set of quantum numbers is possible for a 3d electron.
Recall that the quantum numbers that define an electron are:
• Principal Quantum Number (n): deals with the size and energy of the atomic orbital. The possible values for n are 1 to ∞.
• Angular Momentum Quantum Number (l): deals with the shape of the atomic orbital. The possible values for l are 0 to n – 1.
• Magnetic Quantum Number (ml): deals with the orientation of the atomic orbital in 3D space. The possible values for ml are the range of –l to +l.
Which of the following is a correct set of quantum numbers for an electron in a 3d orbital?
a. n = 3, l = 0, m l = -1
b. n = 3, l = 1, m l = +3
c. n = 3, l = 2, m l = 3
d. n = 3, l = 3, m l = + 2
e. n = 3, l = 2, m l = -2
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