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)
This question appeared on the NUMS 2019 (cancelled sitting) paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Quantum Numbers questions
Shape of orbital is determined by_quantum number is
What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?
Quantum number values for 3p orbitals are____________________?
Maximum number of electrons in a subshell is given by:
Which of the following sets of quantum numbers is incorrect for an electron?
For "f" orbital value of l is: