SATHEE: Atomic Structure Question 389

Atomic Structure Question 389

Question: What is the maximum wavelength line in the Lyman series of He+ ion-

Options:

A) $3 R$

B) $\frac{1}{3 R}$

C) $\frac{4}{4 R}$

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

$\frac{1}{λ} = R Z^{2} [\frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}}] = R \times 2^{2} [\frac{1}{1^{2}} - \frac{1}{2^{2}}]$
$\Rightarrow 3 R; λ = \frac{1}{3 R}$

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