Question

9 the name for h₃n is

Explanation:

Step1: Identify the elements and their valencies

The compound has Hydrogen (H) and Nitrogen (N). Hydrogen usually has a valency of +1, and Nitrogen in this case (forming a compound with Hydrogen) is in the form of the nitride ion or in the ammonia - like structure. The formula \(H_3N\) is the same as \(NH_3\) (ammonia), but when written as \(H_3N\), we still recognize it as ammonia. Alternatively, we can name it using the rules for binary covalent compounds (or ionic - like for ammonia which is a special case). For binary compounds of non - metals (Hydrogen and Nitrogen are non - metals), we use the prefixes for the number of atoms. But in the case of ammonia, the common name is used. The formula \(H_3N\) represents a molecule with 3 Hydrogen atoms and 1 Nitrogen atom. The systematic name can also be considered. The correct name for \(H_3N\) (which is equivalent to \(NH_3\)) is ammonia. Also, using the rules for naming binary compounds: the first element is Hydrogen, and the second is Nitrogen. Since there are 3 Hydrogen atoms, we can use the prefix "tri - " for Hydrogen and "mono - " for Nitrogen (but "mono - " is often omitted for the second element in common names). So the name is trihydrogen nitride, but the most common name is ammonia.

Step2: Confirm the name

The compound \(H_3N\) is chemically identical to ammonia (\(NH_3\)). The IUPAC name can be trihydrogen nitride, but the trivial (common) name is ammonia.

Answer:

ammonia (or trihydrogen nitride)