Halogens.
bromine!
Highly reactive elements easily react with other substances in the environment, forming compounds rather than existing in their pure form. This is why it is rare to find pure samples of highly reactive elements in the ground.
Nitrogen is a group 5A element that is highly reactive and essential for plant growth.
Gold is highly malleable and almost non-reactive.
rubidium
Chlorine is a Highly reactive element.
Plutonium is not highly reactive under normal conditions. It is a relatively stable element that does not react readily with air or water. However, it can be reactive in certain chemical reactions or when exposed to high-energy particles.
Bromine.
Fluorine is a highly reactive and corrosive element that is a pale yellow gas at room temperature. It is the most electronegative element, making it extremely reactive and capable of forming compounds with almost all other elements. Fluorine is commonly used in toothpaste and water fluoridation to prevent tooth decay.
A reactive non metal is an element that can gain the electrons or is more electronegative
Pure sodium is a highly reactive element. When placed in water, sodium will actually explode, producing flames and concussive forces.
Halogens these are the salt forming elements which are highly reactive