🧪 Chemistry · Structure of Atom · NEET & JEE

When an excited electron in a hydrogen atom falls from n = 4 to n = 1, the maximum number of spectral lines that can be emitted is:

Answer: 6.

A 3
B 4
C 6
D 10

Correct answer: C. 6

Explanation: Maximum number of lines = n(n-1)/2 = 4 x 3 / 2 = 6 spectral lines.

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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When an excited electron in a hydrogen atom falls from n = 4 to n = 1, the maximum number of spectral lines that can be emitted is:

Concept context

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