Question

For which of the following ions, could the line spectrum not be explained using Bohr's model?

• A. $H{e}^{+}$
• B. $L{i}^{+}$
• C. $B^{4+}$
• D. $B{e}^{3+}$

Answer 1

The correct option is B $L{i}^{+}$

Bohr's model could explain line spectra of single electron species only.
But $L{i}^{+}$ has 2 electrons.So, Bohr's model can not explain line spectra of $L{i}^{+}$.