Question

hydrogen reacts with fluorine to produce hydrogen fluoride. the diagram is a representation of the structure of hydrogen fluoride.
(i) select the chemical species which react to form hydrogen fluoride
(ii) in the space below, provide a reason for your answer

Explanation:

Step1: Recall reactants of hydrogen fluoride formation

Hydrogen fluoride (HF) is formed from the reaction of hydrogen ($H_2$) and fluorine ($F_2$). Hydrogen exists as a di - atomic molecule with two hydrogen atoms bonded together, and fluorine exists as a di - atomic molecule with two fluorine atoms bonded together.

Step2: Analyze the options

In option b, we see the correct representation of the reactant molecules. The left - hand side shows a hydrogen molecule ($H_2$) and the right - hand side shows a fluorine molecule ($F_2$).

Answer:

b.