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🧪 Chemistry  ·  Structure of Atom  ·  NEET & JEE

For an electron present in a 3d orbital, the number of possible values of the magnetic quantum number (m<sub>l</sub>) is:

Answer: 5.

  • A 3
  • B 5
  • C 7
  • D 1

Correct answer: B. 5

Explanation: For a d subshell, l = 2, so m<sub>l</sub> ranges from -2 to +2, giving 5 possible values (5 d-orbitals).

NK (n=1)L (n=2)M (n=3)

Bohr's model: electrons occupy fixed circular shells (K, L, M) around the nucleus, with each shell holding up to 2n2 electrons.

Concept context

Explore how electrons are arranged inside an atom. Covers Bohr's model, quantum numbers, Heisenberg's uncertainty principle, shapes of s, p, d orbitals, and electronic configuration rules.

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