Given the value of Rydberg constant is 10 7 m - 1 , the wave number of the last line of the Balmer series in…

Given the value of Rydberg constant is 107 m-1, the wave number of the last line of the Balmer series in hydrogen spectrum will be:
  1. 0.025×104 m-1
  2. 0.5×107 m-1
  3. 0.25×107 m-1 
  4. 2.5×107 m-1

Solution

1λ=R(1n12−1n22)
Here, [n1=2, n2=∞]
Wavelength =1λ=R122=R4=1074=0.25×107 m-1

Asked in: NEET 2016 (Phase 1)

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