First slide

Hydrogen spectrum

Question

The wavelength of the first line of Lyman series in hydrogen atom is 1216. The wavelength of the first line of Lyman series for 10 times ionized sodium atom will be added

Moderate

A

0.1 $Å$
B

1000 $Å$
C

100 $Å$
D

10 $Å$

Solution

$λ \propto \frac{1}{Z^{2}} Now, λ_{Na} = \frac{1216}{11 \times 11} \approx 10 Å$

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