Question

Fix the formula for KF2
Write out the full correct formula?

Answer 1

Given :

A chemical compound
`KF_2` .

To Find :

Fix the formula for
`KF_2` and write the full correct formula.

Solution :

We know, Potassium( K ) and Fluorine( F ) both have a valency of 1 i.e potassium can donate one electron and Fluorine can accept one electron only.

So, the chemical formula
`KF_2` is wrong because no element has filled electron.

Therefore, to stabilise the molecule, 1 Potassium atom should make a bond from 1 Fluorine i.e KF ( correct formula ) .

Hence, this is the required solution.