Question

Consider the following statements.
I) Bohr’s theory can also be used to explain the spectra of $H{e}^{+}$ ion
II) Energy of an electron in the first Bohr orbit of hydrogen atom is -13.6 eV
III) Bohr’s theory is only applicable to hydrogen atom and not to any other species
IV) The energy of an electron in a hydrogen atom is quantized
The correct statements are:

• A. I, II, IV
• B. II, III
• C. II, IV
• D. I, II, III, IV

Answer 1

The correct option is A I, II, IV

The energy of an electron in Bohr orbit of hydrogen atom $=\frac{-13.6}{n^2}eV$ (Quantized)

Bohr's theory is applicable to any atom containing one electron $\left(likeH{e}^{+}\right)$.