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# A lithium atom has mass 1.17 $imes$ 10$^-$$^2$$^6$ kg, and a hydrogen atom has mass 1.67 $imes$ 10$^-$$^2$$^7$ kg. The equilibrium separation between the two nucl...

## Question

###### A lithium atom has mass 1.17 $imes$ 10$^-$$^2$$^6$ kg, and a hydrogen atom has mass 1.67 $imes$ 10$^-$$^2$$^7$ kg. The equilibrium separation between the two nuclei in the LiH molecule is 0.159 nm. (a) What is the difference in energy between the $l$ = 3 and $l$ = 4 rotational levels? (b) What is the wavelength of the photon emitted in a transition from the $l$ = 4 to the $l$ = 3 level?

A lithium atom has mass 1.17 $\times$ 10$^-$$^2$$^6$ kg, and a hydrogen atom has mass 1.67 $\times$ 10$^-$$^2$$^7$ kg. The equilibrium separation between the two nuclei in the LiH molecule is 0.159 nm. (a) What is the difference in energy between the $l$ = 3 and $l$ = 4 rotational levels? (b) What is the wavelength of the photon emitted in a transition from the $l$ = 4 to the $l$ = 3 level?

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