Answer: The chemical formula for aluminium nitrite is [tex]Al(NO_2)_3[/tex]
Explanation:
The given compound is formed by the combination of aluminium and nitrite ions. This is an ionic compound.
Aluminium is the 13th element of periodic table having electronic configuration of [tex][Ne]3s^23p^1[/tex].
To form [tex]Al^{3+}[/tex] ion, this element will loose 3 electrons.
Nitrite ion is a polyatomic ion having chemical formula of [tex]NO_2^{-}[/tex]
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.
So, the chemical formula for aluminium nitrite is [tex]Al(NO_2)_3[/tex]
