periodic table familes , nuclear decay, and vocab

Alkali Metals

highly reactive metals because only 1 valence electron.

Explosive

Alkali Earth Metals

2nd most reactive metals because 2 valence electrons.

Aren't as explosive but still reactive.

Reactive Non Metals

These make negative charges and have very low melting points, except for carbon.

Transition Metals

They are unique because they can form multiple different cations.

Post Transition Metals

Most of these metals have charges of 3+ with the others further to the right having either +2 or +4.

Softer and lower melting points than transition metals.

Metalloids

These can act as both nonmetals or metals which make them unique.

Can form both cations and anions.

Lanthanides

They are shiny white metals with varying properties.

Actinides

Extremely radioactive metals.

They are very short lived and unstable.

Halogens

Most reactive non metals because they have 7 valence electrons.

Commonly react with alkali and alkali earth metals.

Noble gases

They do not react much, if it all, because they have a perfect octet of valence electrons.

Gamma decay

Unchanged/ stays the same.

Alpha decay

decrease mass by 4 and decrease protons by 2.

Beta decay

Mass stays same and add one electron.

Nuclear Fusion

Stars that are balls of hydrogen are under pressure and high temperature, they collide with each other forming helium and elements up to iron.

Supernovae

Giant star explosion when they die.