Many classifications exists: metal or nonmetals, solids or gaseous, reactive or not reactive, valency number, radioacive or not, common or rare, etc.
Hydrogen IS reactive
fluorine is the most reactive
This is because the closer they are to the left of the table they are, the more reactive they are. However, things like wood or rubber are not as reactive because they have more electrons. The less electrons, the more reactivity in the element.
Manganese is not particularly reactive. This is strange considering it is more electropositive than its neighbors in the periodic table.
reactive metals
Francium is not reactive as it is a very weak and small substance of an atom in the element. Francium is used useless things, so therefore it is not reactive.
It is inert and so has the power to preserve highly reactive substances from reacting with things. It is for this reason that the extremely reactive metal, caesium, is stored in argon.
Many classifications exists: metal or nonmetals, solids or gaseous, reactive or not reactive, valency number, radioacive or not, common or rare, etc.
It is as reactive as indium. Just kidding, it is reactive. Hoe reactive, more reactive than silver, but not as reactive as tin.
reactive
You need to be able to do things in order to get the strategy going. But there are also things that will happen that you must react to.
helium is non reactive.
Cerium is reactive but not highly reactive.
Hydrogen IS reactive
reactive.
it is reactive