Hydrogen-like atom Rydberg constant

Table 6.3. Rydberg constant for hydrogen-like atoms...

Rydberg constant - The fundamental constant which appears in the equation for the energy levels of hydrogen-like atoms i.e., = hcR where h is Planck s constant, c... 

Rydberg constant (R - The fundamental constant which appears in the equation for the energy levels of hydrogen-like atoms i.e., E = hcR. 2 JrP-, where h is Planck s constant, c the speed of light, Z the atomic number, (Xthe reduced mass of nucleus and electron, and n the principal quantum number (n = 1,2,. ..). 

Calculate the energies needed to remove an electron from the w = 1 state and the w = 5 state in the Li ion. What is the wavelength (in nm) of the emitted photon in a transition from w = 5tow=l The Rydberg constant for hydrogen-like ions is (2.18 X 10 J)Z where Z is the atomic number. 

The He ion contains only one electron and is therefore a hydrogen-like ion. Calculate the wavelengths, in increasing order, of the first four transitions in the Balmer series of the He ion. Compare these wavelengths with the same transitions in a H atom. Comment on the differences. (The Rydberg constant for He+is 8.72 X 10 i J.)... 

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