Help pleaseee. Thanks so much A.) Determine the frequencies and energies of the

Question

Help pleaseee. Thanks so much

A.) Determine the frequencies and energies of the light you have observed from the hydrogen discharge tube.

B.) Determine exactly which electron transition (e.g. 2 -> 1) corresponds to each line in the spectrum you observed for hydrogen.

Hint: To do this, you will need to use Bohr's equation regarding the energy differences between the various allowed states for an electron in a hydrogen atom, for emission of light, delta E is negative since the system is losing energy.

Explanation / Answer

a. Frequency = c /

Energy E = h

= 410 nm = 410 * 10-9 m

= c / = 3 * 108 m / s / 410 * 10-9m = 7.31 * 1014 s-1

E = h = 6.626 * 10-34 J/s * 7.31 * 1014 s-1 = 4.84 * 10-19 J

= 434 nm = 434 * 10-9 m

= c / = 3 * 108 m / s / 434 * 10-9m = 6.91 * 1014 s-1

E = h = 6.626 * 10-34 J/s * 6.91 * 1014 s-1 = 4.58 * 10-19 J

= 486 nm = 486 * 10-9 m

= c / = 3 * 108 m / s / 486 * 10-9m = 6.17 * 1014 s-1

E = h = 6.626 * 10-34 J/s * 6.17 * 1014 s-1 = 4.09 * 10-19 J

= 656 nm = 656 * 10-9 m

= c / = 3 * 108 m / s / 656 * 10-9m = 4.57 * 1014 s-1

E = h = 6.626 * 10-34 J/s * 4.57* 1014 s-1 = 3.03 * 10-19 J

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