NEET Chemistry Quantum Mechanical Model MCQ Question with Solution

For a hydrogen-like species with atomic number Z, what is the energy of the electron in the n=2 orbit?

A

-54.4 Z² eV

B

-13.6 Z² eV

C

-3.4 Z² eV

D

-1.7 Z² eV

Option C

The energy of the stationary states for hydrogen-like species is given by E = -13.6 Z²/n² eV. For n=2, the energy is -13.6 Z²/4 = -3.4 Z² eV.

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