Objectives
Following your study of this chapter, you should be able to:
 cite at least three reasons that electrons cannot exist within the nucleus
 follow the discussion in the text of the discovery of the neutron
 understand and apply the nucleus designators A, N, X and Z
 know which which quantitiy (A, N, X or Z) determines chemical properties of an element
 calculate the nuclear radius of an atom
 calculate nuclear charge density of an atom
 find nuclear magnetic moments of the neutron, proton and electron
 define and calculate binding energy for a given atom
 have a quantitative understanding of the range of the nuclear force and whether it is charge dependent
 talk about the effect of the Coulomb force as the atomic number increases
 calculate the total Coulomb energy of a given nucleus
 use the von Weizsacker semiempircal mass formula and note what each term represents
 briefly discuss the two types of models used to explain nuclear properties
 explain how the value of disintegration energy affects racioactive decay
 use the radioactive decay law to calculate the decay constant, the time it takes for a certain decay, the number of radioactive nuclei at a given time, the halflife or the mean lifetime
 state the law of conservation of nucleons and use it to determine whether a certain decay is allowed
 know the general forms of a decay, b decay, b+ decay, g decay and electron capture
 name the four decay paths that heavy naturally occurring nuclides are allowed to take and why
 perform time dating using lead isotopes and radioactive carbon
