1. Elements What is the difference between 14 C and 14 N? (Assume neutral atoms.) A. 14 N has more electrons B. 14 N has more protons C. 14 N has fewer neutrons D. all of the above

2. Isotopes What is the difference between 184 W and 182 W? (Assume neutral atoms.) A. 184 W has more electrons B. 184 W has more protons C. 184 W has more neutrons D. all of the above

3. Nuclear Mass The mass of a nucleus is equal to A.The mass number, A B.The mass found in the periodic table C.The total mass of its constituent protons and neutrons D.All of the above E.None of the above

4. Carbon-14 PAL  Answer the following questions about 14 C neutral atom. a)How many electrons does it have. 6 b)How many protons does it have? 6 c)How many neutrons does it have? 8 d)What is the total mass of the above constituents? 14.11627 u e)What is the mass of the atom? 14.003242 u f)What is the binding energy of the atom? 105 MeV