Gold.
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.
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.
Hydrogen
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.
The element is sodium. It is highly reactive, reacting violently with water because it is an alkali metal with one excess electron. Table salt is sodium chloride, and is an ionic salt made up of sodium ions and chloride ions in a giant lattice structure.
bromine!
Nitrogen is a group 5A element that is highly reactive and essential for plant growth.
rubidium
Fluorine, F, is the most reactive element of all.
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.
A reactive non metal is an element that can gain the electrons or is more electronegative
Halogens.
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.
Pure sodium is a highly reactive element. When placed in water, sodium will actually explode, producing flames and concussive forces.
Well, sodium is a metal so it could be both. [depends on phase]