The skeletal equation for the formation of HF from its elements is:
H + F ----> HF
A skeletal equation is not usually balanced in that the total mass of the elements in the reactant side are not equal to the the mass of the elements in the product side.
In the formation of HF gas from its elements, the skeletal equation is shown below:
H + F ----> HF
Therefore, the skeletal equation for the formation of HF is: H + F ----> HF
Learn more about skeletal equations and chemical equations at: https://brainly.com/question/704420