The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?
Correct answer: D. 7
- A. 1
- B. 3
- C. 5
- D. 7
Explanation
For azimuthal quantum number l = 3, the magnetic quantum number m can have seven values: -3, -2, -1, 0, +1, +2 and +3. Therefore, the number of orbitals is 2l + 1 = 2(3) + 1 = 7 orbitals. Students may choose 3 because they confuse the value of l with the number of orbitals.
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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.
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