Yes
yes
Hydrogen IS reactive
the mixture of copper and tin is made to bronze.
fluorine is the most reactive
Manganese is not particularly reactive. This is strange considering it is more electropositive than its neighbors in the periodic table.
Some metals, notably potassium and sodium are highy reactive. Others eg bronze are much less so.
yes
It is as reactive as indium. Just kidding, it is reactive. Hoe reactive, more reactive than silver, but not as reactive as tin.
reactive
helium is non reactive.
Cerium is reactive but not highly reactive.
Hydrogen IS reactive
reactive.
it is reactive
the mixture of copper and tin is made to bronze.
fluorine is the most reactive
Manganese is not very reactive; the electronegativity is 1,55.