Question

Wave number of spectral line for a given transition is x centimetre inverse for helium plus then its value for beryllium 3 + for same transition

Answer 1

Answer:

Hey mate here is your answer.//

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Explanation:

Wavenumber ∝ Z² ,

x/y = (2/4)² ,

x/y = 1/4 ,

y = 4x 1/cm.

Hope it helps you.//✔✔✔

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Answer 2

Answer:

4 multiply 1 sentimeter