🧪 Chemistry · Structure of Atom · NEET & JEE

Using E = −13.6/n² eV for hydrogen, the energy of the n = 2 level is:

Answer: −3.4 eV.

A −13.6 eV
B −6.8 eV
C −3.4 eV
D −1.51 eV

Correct answer: C. −3.4 eV

Explanation: E = −13.6 / 2² = −13.6 / 4 = −3.4 eV.

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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Using E = −13.6/n² eV for hydrogen, the energy of the n = 2 level is:

Concept context

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