Question

At what atomic number would a transition fromn=2 ton=1 entry level result in the emission of photon of lambda=3 x 10-8 m. ​

Answer 1

Answer:

The Reidberg wavelength formulae:

3.8×10

−8

1

=109678(1−

4

1

)×Z

2

Z

2

=405

Z=20

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