2-4. Calculate the energy required for the transition of an electron from the K shell to the L shell in tungsten (see Margin Figure 2-4). Compare the result with the energy necessary for a similar...

2-4. Calculate the energy required for the transition of an electron from

the K shell to the L shell in tungsten (see Margin Figure 2-4). Compare

the result with the energy necessary for a similar transition in

hydrogen. Explain the difference.

2-5. What is the energy equivalent to the mass of an electron? Because

the mass of a particle increases with velocity, assume that the electron is at rest.