2015 Med Phys I Lecture 1.3 PreTest Question Title * 1. Name: Question Title * 2. Technetium is an element commonly used in nuclear imaging due to its radioactive properties. In relation to tungsten on the periodic table, it lies one column to the right and one row up. The binding energy of a K-shell electron in technetium is approximately equal to several eV several keV several MeV several GeV Question Title * 3. What differentiates an Auger electron from a photoelectron An Auger electron is a photoelectron with a very specific energy range (10-100 keV). An Auger electron is an electron ejected from an inner shell of an atom (not a valence electron) whereas a photoelectron can be ejected from anywhere. An Auger electron is ionized by a photon which was created by an electron filling in a hole whereas a photoelectron is ionized by an incident photon. Question Title * 4. Which of the following does not influence the binding energy of an electron in an atom? the atomic number of the atom the mass of the given atom the principal quantum number of the electronic energy level Question Title * 5. Which of the following statement does not agree with Bohr’s model? Electrons can only gain and lose energy by jumping from one well-defined orbit to another Electrons continuously lose energy as they travel Electrons revolve in specified orbits with fixed radii The net charge of an atom is zero Question Title * 6. An electron from which shell would require the most energy to remove? K L M N Question Title * 7. Are there any issues that are not clear to you at this time? Done