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🧪 Chemistry  ·  Structure of Atom  ·  NEET & JEE

How many electrons in an atom can have the quantum numbers n = 3, l = 2?

Answer: 10.

  • A 2
  • B 6
  • C 10
  • D 14

Correct answer: C. 10

Explanation: n = 3, l = 2 denotes the 3d subshell, which holds a maximum of 10 electrons.

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.

Read the full Structure of Atom notes →