Question

The ratio of wavelength of first line of Lyman series of doubly ionized lithium atom to that of the first line of Lyman series of deuterium (₁H²) will be

• A. 4 : 1
• B. 1 : 4
• C. 9 : 1
• D. 1 : 9

Answer 1

Answer: (D)

1 : 9

Answer 2

$\frac{1}{\lambda} = Rz^{2}\left( \frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}} \right)$