1. Calcium
2. Fluorine
3. Chlorine
4. Iodine
5. Neon
6. Aluminum
7. Copper
8. Mercury
9. Chromium
10. Lead
11. Carbon
12. Sulfur
13. Iron
14. Tungsten
15. Arsenic
16. Uranium
17. Hydrogen
18 Magnesium
The same because although it is smaller pieces, the pieces still all add up to be the same weight
<span>thermal energy
hope this helped</span>
Scientists can calculate the number of neutrons by subtracting the atomic number from the atomic mass.
they subtract the protons