Question

Which of the following set of quantum numbers belong to highest energy?

• A. n = 4, l = 0, m = 0, s = + $\frac{1}{2}$
• B. n = 3, l = 0, m = 0, s = +$\frac{1}{2}$
• C. n = 3, l = 1, m = 1, s = +$\frac{1}{2}$
• D. n = 3, l = 2, m = 1, s = +$\frac{1}{2}$

Answer 1

Answer: (D)

n = 3, l = 2, m = 1, s = +$\frac{1}{2}$

Answer 2

Atomic orbitals are 4s, 3s, 3p and 3d. (n + l) values being 4, 3, 4 and 5. Hence 3d has highest energy.