in a table format, compare the following characteristics or properties of the alkali and alkali-earth metals; reactivity, electropositivity, ionization energies, melting points and atomic sizes.
Whoa!!! You're talking about a major project here. This is a matter of YOU looking up the data, YOU making a table, YOU comparing size, ionization potential, etc etc. YOU can look up that data as well, if not as easily, as I so you look it up. Then if you have questions about how to compare the data, post those questions separately (as well as the data you've looked up) and we take those questions one at a time. Good luck.
