Question
Asked Nov 7, 2019
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 Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = –2.18 × 10–18 J(1/n2 ). (h = 6.63 × 10–34 J • s) 
 

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Expert Answer

Step 1

Given:

nf = 4

ni = 1

Step 2

Energy of electromagnetic wave is given by,

1
-2.18 x 10-18 x
E
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1 -2.18 x 10-18 x E

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Step 3

Calculation for...

1
2.18 x 10-18 x
1
E
1
E 2.18 x 10-18 x
42
1
12
E 2.18 x 10-18 x (-0.9375)
E 2.044 x 10-18J
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1 2.18 x 10-18 x 1 E 1 E 2.18 x 10-18 x 42 1 12 E 2.18 x 10-18 x (-0.9375) E 2.044 x 10-18J

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