Which of the following is the correct name for the molecular compound with the chemical formula NH_3?

• A. Nitrogen hydride
• B. Ammonia
• C. Hydrogen nitride
• D. Nitrogen trihydride

Answer: (B)

Verified step by step guidance

1. Identify the chemical formula given: NH_3.
2. Recognize that NH_3 is a molecular compound composed of nitrogen (N) and hydrogen (H).
3. Recall the naming conventions for molecular compounds: use prefixes to indicate the number of atoms (mono-, di-, tri-, etc.) and the element names, but some common compounds have special names.
4. Consider the options: 'Nitrogen hydride' and 'Hydrogen nitride' are generic names, 'Nitrogen trihydride' follows the prefix rule but is not commonly used, and 'Ammonia' is the well-known common name for NH_3.
5. Conclude that the correct and accepted name for NH_3 is 'Ammonia', which is the standard name used in chemistry for this compound.