Documents What do the numbers mean? Na 11 22.990 sodium This is the atomic number. It is the number of protons...

What do the numbers mean? Na 11 22.990 sodium This is the atomic number. It is the number of protons in a single atom of this element. It is also # of electrons. The symbol…

Documents Atomic and Ionic Size Trends

Mr. Shields Regents Chemistry U08 L04 Size Trends Atomic Radii follows two trends: Radii increases going down a group Radii decreases going across a period But how do we…