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What is the smallest angle in degrees that S makes with the z -axis for an...

What is the smallest angle in degrees that S makes with the z -axis for an l = 4 electron?

What is the smallest wavelength line (in nanometers) if the final electron state is n=7? The Rydberg constant is 1.097×107 m.

Rutherford found the size of the nucleus to be about 10−15 m . This implied a huge density. What would this density be for a nucleus with a mass of 260×10-27 kg? Give your answer in terms of 1020 kg/m3.

Calculate the ratio of the angular momentum to the electron spin angular momentum for an l = 1 electron.

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