Manganese is not very reactive; the electronegativity is 1,55.
Manganese is not particularly reactive. This is strange considering it is more electropositive than its neighbors in the periodic table.
Manganese is not radioactive; chemically is sufficiently reactive.
Manganese is a reactive element, but it is not as reactive as elements like sodium or potassium. It reacts slowly with water and oxygen to form oxides and hydroxides. In the presence of acids, manganese can react to produce hydrogen gas.
helium is non reactive.
As with most fluorides, it is extremely reactive.
reactive
Aluminium is non reactive as it forms a coating of Al2O3.
It is a nonreactive metal
Chlorine is a very reactive non-metal. It readily combines with other elements to form compounds and is highly electronegative, meaning it has a strong tendency to gain electrons in chemical reactions.
A reactive non metal is an element that can gain the electrons or is more electronegative
fluorine is the most reactive non metal in the periodic table.
Carbon is considered highly reactive. This is due to the fact that it can react with many elements on Earth.