# How would you use the periodic table to identify the atomic number, atomic mass, and number of protons, neutrons, and electrons in an atom of neon (Ne)?

And the Periodic Table will tell you that for Neon gas, $Z = 10$, i.e. there are 10 positively charged particles in the neon nucleus. If there are 10 nuclear charges, there must be 10 electronic charges, because neon is a neutral gas (as is all of matter).
The symbol also quotes the atomic mass, $20.180 \cdot \text{amu}$. Since electrons have negligible mass the neon atom MUST contain 10 other heavy particles, and these are neutrons, located in the atomic nucleus.