Asked Oct 20, 2019

What is the energy in joules and the wavelength in meters of the photon produced when an electron falls from the n = 5 to the n = 3 level in a He+
ion (Z = 2 for He+)?


Expert Answer

Step 1


nf = 5

ni = 3

Z = 2

Step 2

Energy of electromagnetic wave is given by,


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1 2.18 x 10-18 x Z2 x 1 E

Step 3

Calculation for...


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1 E 2.18 x 10-18 x Z2 x 1 1 E -2.18 x 10-18 x 22 x 5232 E 2.18 x 10-18 x 22 x (-0.07111) E 6.20 x 10-19J


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