Three of the known wavelengths of the emission spectrum for helium are 402.6 nm, 447.1 nm, and 587.5 nm.   If n1 = 2 for these lines, calculate n2 using the Rydberg equation.  Use the correct number of significant figures and be sure to convert nm to m for this calculation. Explain why your results of these calculations indicate that the electron behavior of atoms of elements with more than one electron is not well described by the Rydberg equation if the Bohr model of the atom is correct.

True or false? In a hydrogen atom, an electron that passes from orbital 3s to 2p releases a photon of a different energy from an electron that passes from orbital 3d to 2s. Justify your answer in 1 sentence or 2.

Express the speed of the electron in the Bohr model in terms of the fundamental constants (me, e, h, 0), the nuclear charge and the quantum number n.  Evaluate the speed of an electron in the ground states of He+ ion and U91+.  Compare these speeds with the speed of light c.  As the speed of an object approaches the speed of light, relativistic effects become important. In which kinds of atoms do you expect relativistic effects to be greatest?

The energy E of the electron in a hydrogen atom can be calculated from the Bohr formula: R E=- In this equation R, stands for the Rydberg energy, and n stands for the principal quantum number of the orbital that holds the electron. (You can find the value of the Rydberg energy using the Data button on the ALEKS toolbar.) n Calculate the wavelength of the line in the emission line spectrum of hydrogen caused by the transition of the electron from an orbital with n=4 to an orbital with n 1. Round your answer to 3 significant digits. 0 nm X olo Ar B

Enter your answer in the provided box. Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n= 6 to n=4 state.

The energy E of the electron in a hydrogen atom can be calculated from the Bohr formula: E=−Ry/n2 In this equation Ry stands for the Rydberg energy, and n stands for the principal quantum number of the orbital that holds the electron. (You can find the value of the Rydberg energy using the Data button on the ALEKS toolbar.) Calculate the wavelength of the line in the emission line spectrum of hydrogen caused by the transition of the electron from an orbital with n=6 to an orbital with n=1. Round your answer to 3 significant digits.