The lattice constant of a simple cubic lattice is do. (a) sketch the following planes: (i) (110), (ii) (111), (iii) (220), and (iv) (321). (b) sketch the following directions: (i) [110], (ii) [111], (iii) [220], and (iv) [321].

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material