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AIIMS 2002
Exam
AIIMS
Year
2002
Subject
Chemistry
Chapter
Structure of Atom

AIIMS 2002 · Chemistry · Structure of Atom

Assertion : For Balmer series of hydrogen spectrum, the value n_1=2...

Assertion : For Balmer series of hydrogen spectrum, the value n1=2n_1=2 and n2=3,4,5n_2=3,4,5. Reason: The value of nn for a line in Balmer series of hydrogen spectrum having the highest wavelength is 4 and 6 .

Options

  1. AIf both the assertion and reason are true and reason is a correct explanation of the assertion.
  2. BIf both assertion and reason are true but assertion is not a correct explanation of the assertion.
  3. CIf the assertion is true but the reason is false.
  4. DIf both assertion and reason are false.

Correct answer

C. If the assertion is true but the reason is false.

Step-by-step solution

The wavelength of the line can be calculated by the Ritz formula : 1λ=\frac{1}{\lambda}=R\left(\frac{1}{n_1^2}-\frac{1}{n_2{ }^2}\right),R=R=\text{ Rydberg constant }Therefore,forcalculatinghighestwavelengthinBalmerseries(n1=2),n2Therefore, for calculating highest wavelength in Balmer series \left(n_1=2\right), n_2 should be 3 .
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