Yes. They're very reactive, with fluorine (a halogen) being the most reactive of all elements.
Yes They do They all form compounds with Hydrogen
Up today are known compounds of einsteinium with oxygen and halogens.
Compounds containing halogens are called halides. These compounds are formed when a halogen element (such as fluorine, chlorine, bromine, or iodine) reacts with another element to form a chemical bond.
Because halogens form negative ions, alkali metals form positive ions; both are reactive elements and an electrostatic attraction exist.
Halogens react with air to form metal halides. For example, chlorine will react with iron to form iron(III) chloride. Halogens are highly reactive and will readily form compounds with many elements in the air.
Silver nitrate can react with organic compounds that contain halogens to form a precipitate of silver halide. This reaction is commonly used as a test for the presence of halogens in organic compounds. However, for organic compounds that do not contain halogens, there may not be a significant reaction with silver nitrate.
Samarium can react with oxygen, water, and acids to form various compounds. It can also react with halogens such as chlorine and bromine to form halides.
Actinium typically bonds with elements like oxygen, sulfur, and halogens such as fluorine and chlorine to form various chemical compounds.
The halogens are not found naturally in the earth's crust as pure elements because of their extreme reactivity. Because the halogens are close to having completely filled electron shells, they will often react with other substances in order to gain an electron. As an especially noteworthy case, fluorine is the most reactive of the halogens (and elements in general), and will even react with glass. Therefore, the halogens are found naturally as compounds, not pure elements.
Alkali metals and halogens.
Halogens are a group of elements that consist of fluorine, chlorine, bromine, iodine, and astatine. These elements can form compounds with various other elements, such as hydrogen (e.g. hydrogen fluoride), metals (e.g. sodium chloride), and non-metals (e.g. carbon tetrachloride). These compounds often exhibit unique properties due to the high reactivity of halogens.
They are completely different Noble gases are colorless, monoatomic gases; the halogens are diatomic, colored and there form at room temperature is F, gas, Cl, gas, Br, liquid I, solid. Nobel gases are chemically unreactive, helium and neon have no known compounds, a few very reactive compounds are known for the rest. The halogens are all reactive, fluoringe is the most reactive. One or more of the halogens will form compounds with all of the other elements apart from the noble gases. (apart from He and Ne)