Question

An electron in Li2+ falls from n = 2 to the ground state. Calculate the wavenumber, (νˉ), of the emitted photon.

Answer 1

U knw Rydbergs Formula....Use it:

\[\frac{ 1 }{ \lambda } = 109677z^2(\frac{ 1 }{ n1^2 }-\frac{ 1 }{ n2^2) }\]

\[ (νˉ) = \frac{ 1 }{ \lambda }\]

Answer 2

n1 = 1

n2 = 2

z = 3

Answer 3

Hope U can Solve the Rest..)