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Is a hydrogen atom, an electron in the f...

Is a hydrogen atom, an electron in the first from the second orbit to the first orbit , Find out
a. The frequency of the radiation emitted
b. The wavelength of the radiation
c. The regain of the electromagnetic spectrum in which this line with fall

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The correct Answer is:
A, B, C, D

a.`v= 3.29 xx 10^(15)[(1)/(1^(2)) - (1)/(2^(2))] = 2.47 xx 10^(15) cps`
b. `lambda= (c )/(v)`
` lambda = 3 xx 10^(8)//2.47 xx 10^(15) m`
`= 1.215 xx 10^(-7) m = 1.215 xx 10^(3) Å`
UV region of EMR
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