Find out the wavenumber, when an electron jumps from 2nd orbit to 1st.

Find out the wavenumber, when an electron jumps from 2nd orbit to 1st. Correct Answer 82257.75 cm-1

The Swedish spectroscopist, Johannes Rydberg gave a formula; Wavenumber = RH. Here RH is the Rydberg constant and is equal to 109,677 cm-1. Wavenumber = 109,677(3/4) = 82257.75 cm-1.
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