O 4/23/2016 11:55 PM A 84.9/100 4/21/2016 02:41 PM Gradebook e Print Calculator

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O 4/23/2016 11:55 PM A 84.9/100 4/21/2016 02:41 PM Gradebook e Print Calculator E Periodic Table Question 6 of 10 Map A General Chemistr Donald McQuarrie. Rock .Ethan Gallogly sity Science Books presented by Sapling Lea Hydrogen atoms are excited by a laser to the n 4 state and then allowed to emit. What is the maximum number of distinct emission spectral nes (lines of different wavelengths) that can be observed from this system? O 1 O 2 6 Calculate the wavelength of the 3 2 transition. Number O Previous Next Give Up & View Sol Check Answer Ext Hint

Explanation / Answer

a) 6

b) we know,

E_photon = 13.6eV*(1/2^2 - 1/3^2)

h*c/lamda = 13.6eV*(1/2^2 - 1/3^2)

lamda = h*c/(13.6eV*(1/2^2 - 1/3^2))

= 6.626*10^-34*3*10^8/(13.6*1.6*10^-19*(1/4 - 1/9))

= 6.58*10^-7 m

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