The energy levels for hydrogen-like atoms (e.g., atoms with a single electron) c

Question

The energy levels for hydrogen-like atoms (e.g., atoms with a single electron) can be written as En = Z2Eo/n2, where Eo is the energy of the ground level for hydrogen and Z is the number of protons in the atom. The diagram below shows part of the line spectrum for hydrogen (wavelength increases to the right).

The line spectrum in question 1 was obtained by placing a mask that has a wide slit (~1 mm) and a prism between a screen and a hydrogen lamp.

Predict what you would see on the screen if the prism were put back in place and the hydrogen lamp were replaced by a green light source

Predict what you would see on the screen if the prism were now removed and replaced by a mask with a narrow slit (~1 mm wide).

Explanation / Answer

In hydrogen atom , depending on the electronic transistion we have all the spectrum possible , . So from the source we have many wave lengths and prism disperses the given wave length.

Tthen we have the diffraction pattren using single slit. Which diffract the light in given order as shown in the figure.

As the green light source we have , only one wave length , So we see the dispersion spectrum of green light , That may be light green to dark greeen when coming out of the prism.

if we further , passed it through a small slit. It will show diffraction order with various order with decreasing intensity but still in green color.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.