An interhalogen chemical is a molecule that includes two or more distinct halogen atoms (fluorine, chlorine, bromine, iodine, or astatine) but no other element atoms.
Interhalogen compounds are created when halogen-group elements react with one another.
The majority of interhalogen chemicals are binary (composed of only two distinct components).
The typical formula for interhalogen compounds is XYn, where n=1,3,5, and 7, and X is a halogen that is less electronegative than the other halogen, Y. (the more electronegative one).
Because the halogens have odd valencies, the value of n is odd.
They are all hydrolyzed and ionised to produce polyhalogen ions.
Because astatine is very radioactive in nature, the poly hydrogen generated from it has a very short half-life.
In other terms, it is a molecule made up of two or more distinct components from group 17.
Interhalogen chemicals are classified into four types:
Diatomical interhalogens (AX)
Tetratomic interhalogens (AX3)
Hexatomical interhalogens (AX5)
Octatomical interhalogens (AX7)
A large-sized halogen with high electropositivity interacts with a set of 17 items with low electropositivity.
The no. of atoms in the molecule grows as the ratio between the radius of bigger and smaller halogens increases.
XY:
The characteristics of the diatomic interhalogen are intermediate between those of the two separate halogens from which it is composed.
The covalent connection that occurs between the two halogens that constitute the corresponding interhalogen has ionic properties.
In this case, the bigger element, X, gets oxidised and obtains a positive charge.
The halogens F, Cl, Br, and I have the most known combinations, although not all of them are stable.
XY7
Iodine fluoride (XY7) is a colourless gas.
It is created by combining pentafluoride with fluorine.
It contains no lone pair of electrons in the valence shell and is chemically inert.
In structure, it is similar to sulphur hexafluoride.
It has a pentagonal bipyramidal molecular structure.
When n large atoms carry 7 little atoms, this is the only molecule that can be created.
Final Answer:
An inter-halogen chemical is a molecule that includes two or more halogen atoms (fluorine, chloride, bromide, or iodine as astatine) but no other elements.
The majority of interhalogen chemicals are binary (composed of only two distinct elements).
Their formulae are often XYn, with n=1,3,5, or 7, with X being less electronegative than Y.
Examples are etc.