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The energy of an electron in the nth Bohr orbit of hydrogen atom is:

1. -13.6/n⁴ eV
2. -13.6/n³ eV
3. -13.6/n² eV
4. -13.6/n eV

Correct answer: -13.6/n² eV

Solution

The energy of an electron in the nth Bohr orbit of a hydrogen atom is given by the formula E = -13.6/n² eV, where n is the principal quantum number. This is derived from Bohr's model of the hydrogen atom.

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