Question

What is the name of the ionic compound $LiF$ ?

Answer 1

This compound is an example of a binary ionic compound which has one metal and one non-metal. Ionic bond is basically the transfer of electrons from one atom to another. Where metal loses electrons and non-metal accepts it and gains electrons.

Complete answer:
$LiF$ has one metal atom and one non-metal, lithium is metal and fluorine is non-metal. So, the metal has plus one charge and the non-metal that is fluorine has negative charge. These two ions make ionic bonds. An ionic band is made up of metal and non-metal.
As we call positive ion cation and negative ion anion lithium is written as lithium only and fluorine which is the non-metal comes with a suffix that is ‘ide’.
So, the name of the ionic compound is lithium fluoride.

Note:
Binary ionic compounds consist of only two types of elements. For any binary ionic compound, while naming it we first write cation and then the name of the anion. Normally, transition elements are capable of forming more than one type of ions. So, we use roman numerals to name different ions.