16. Common isotopes, which are atoms of your element with different number of neutrons. Write down at least 2-3 examples 3pts
17. Source of element is it mined, obtained from the ocean, air, etc..) 4pts
18. Draw and label or cut and paste a picture of your atom containing its protons, neutrons, and electron
configuration somewhere on your project 10pts
19. Practical uses of the element by man 4pts
20. A common reaction of your element when it chemically reacts with another element either in nature
or in a laborator