Question

What is the formula for aluminum nitrite ?

Answer 1

Answer: The chemical formula for aluminium nitrite is $Al(NO_2)_3$

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 $[Ne]3s^23p^1$.

To form $Al^{3+}$ ion, this element will loose 3 electrons.

Nitrite ion is a polyatomic ion having chemical formula of $NO_2^{-}$

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 $Al(NO_2)_3$