Calculate the Kα and Kβ wavelengths for He and Li.
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Calculate the Kα and Kβ wavelengths for He and Li.
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- The wavelengths of the Brackett series for hydrogen are given by n = 5, 6, 7,.... (a) What are the wavelengths of the first three spectral emission lines in this series (in nm)? (Enter them in order of decreasing wavelength.) largest value nm nm smallest value nm (b) In which band of the electromagnetic spectrum do these lines appear? visible light region O infrared region O ultraviolet region O gamma ray region O x-ray regionCalculate the wavelength of the third line of the Paschen series for hydrogen.An electron is in the third excited orbit of hydrogen, corresponding to n = 4. (a) Find the radius of the orbit. nm (b) Find the wavelength of the electron in this orbit. nm
- For a given value of n , what are the allowed values of l ?(a) A hydrogen atom has its electron in the n = 6 level. The radius of the electron's orbit in the Bohr model is 1.905 nm. Find the de Broglie wavelength of the electron under these circumstances. m (b) What is the momentum, mv, of the electron in its orbit? kg-m/s