Question

calculate the wavelenth of the radiation released when an electron moves from n=5 to n=2 in nm

Answer 1

You can find the energy of an electron in a certain level with the formula E=(-kz^2)/(n^2). K is Bohr's constant, n is the level, and z is the atomic number. Once you get the energy you can you can use \[\lambda=(hc)/E\]