most reactive metals

reactive with water

reactive with water

2 valence electrons (which they lose to form 2⁺ ions)

if put in a solution, will tchange solution's color

give off color (flame test)

Lathanides

Actinides

follow period trends, but not group trends (reason why they're separated)

contains elements in all three states of matter at room temperature (F, Cl are gases, Br is liquid, I is solid)

want to gain an electron to become 1-

"the snobs"

outer energy levels are completely filled --> chemically unreactive