Very, tho reactivity decreases down the group
Active
The halogens are are the most active nonmetals. There're 5 non-metallic elements in the halogen family. The term "halogen" means "salt-former" & compounds containing halogens are called "salts".They are: Fluorine, Chlorine, Bromine, Iodine & Astatine
Active. VERY active. Sometimes, EXPLOSIVELY active.
Metals in group one are chemically active as compared to the elements in group three and two. Elements like sodium, potassium, chlorine and fluorine are some of the chemically active elements.
The most active group of nonmetals are those in Group 17, and these are the halogens. The list is headed by fluorine, which is the most reactive element of the group and of the Periodic Table as a whole.
Halogens
Fluorine
No uranium is not chemically active
halogens
Covalent Bond. Chemically Active. The only elements that are inert are group 18, or 8A.
Fluorine
Halogens are very reactive both physically & chemically than that of inert gases ,as halogens have valency 1.
Noble gases have completely filled orbitals and hence are generally chemically inert. Halogens are highly reactive as they need one more electron to complete octet.
The most active metals are alkali metals.The most active nonmetals are halogens.
halogens
Active
Halides are the most active nonmetals on the periodic table because it has high electronegativity. Meaning it is more likely to attract an electron towards itself to react.