Name the orbital n = 5; l = 2; m = 0.
Correct answer: B. 5d
- A. 5p
- B. 5d
- C. 5s
- D. 5f
Explanation
Quantum numbers are the basis of the sequence, arrangement, shape, and orientation of the elements in periodic table. N = 5 indicates the 5th energy level (5th period of the periodic table or the 5th principal quantum number) L = 2 indicates the shape of the orbital (2 corresponds d-orbital-shaped quantum number) M = 0 indicates the orientation of the orbital (z - axis magnetic quantum number)
Last updated
About Quantum Numbers
Quantum numbers describe an electron's energy level, subshell, orbital orientation and spin. You examine the principal, azimuthal, magnetic and spin quantum numbers, their allowed values, orbital capacity and how they determine electronic configurations and distinguish electrons within an atom.
Practise Atomic Structure
922 free Atomic Structure MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.