What is the maximum wavelength line in the Lyman series of $\mathrm{He}^{+}$ ion?

Question

Aicharya · Accepted Answer

$\frac{1}{\lambda}=\mathrm{RZ}^{2}\left[\frac{1}{\mathrm{n}_{1}^{2}}-\frac{1}{\mathrm{n}_{2}^{2}}ight]=\mathrm{R} \times 2^{2}\left[\frac{1}{1^{2}}-\frac{1}{2^{2}}ight].$
$\Rightarrow 3 \mathrm{R} ; \lambda=\frac{1}{3 \mathrm{R}}$

What is the maximum wavelength line in the Lyman series of $\mathrm{He}^{+}$ ion?

Solution