Answer: Option (a) is the correct answer.
Step-by-step explanation:
It is given that the compound contains one hydrogen atom and one fluorine atom. As both hydrogen and fluorine are non-metals so, when both of them chemically combine together then they tend to share their valence electrons.
As a result, a covalent bond is formed between them.
Therefore, nomenclature of the compound will be as follows.
While writing the name of a compound a positive ion is named first of all and then name of the anion is placed along with a suffix that is, "-ide" in this case.
Therefore, name of the compound HF is hydrogen fluoride.