on a sheet of paper, answer the below questions, include the names of all group members.

topic(s): isotopes & ions

questions [14 points]

1. what is an isotope ? [1 point]

2. what is average atomic mass ? include a formula and define the terms in the formula. [1 point]

3. how is an ion & atom the same ? different ? [1 point]

4. based on the preceding information and your knowledge from prior assignments, fill-in the below table in regards to various (hypothetical ?) ions. [11 points]

symbol # protons # neutrons # electrons mass number charge
23Na +          
  24 25     +2
      8 17 -2