Multiple Choice
Which of the following is the correct chemical formula for iodine tribromide?
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3. Chemical Reactions
Naming Molecular Compounds
Multiple Choice
Which of the following features should be included in the IUPAC name for NF_3?
A
The name 'nitrogen fluoride' without any prefixes
B
The use of 'oxide' for the fluorine element
C
No prefixes for either element
D
A prefix indicating three fluorine atoms
Verified step by step guidance1
Step 1: Identify the type of compound NF_3 is. Since it consists of two nonmetals (nitrogen and fluorine), it is a molecular (covalent) compound, so the IUPAC naming uses prefixes to indicate the number of atoms.
Step 2: Recall the common prefixes used in naming molecular compounds: mono- (1), di- (2), tri- (3), tetra- (4), etc. These prefixes are placed before the element names to indicate the number of atoms present.
Step 3: Determine the correct element names. 'Nitrogen' remains as is, and 'fluorine' changes to 'fluoride' when naming compounds, following IUPAC conventions for anions or substituents.
Step 4: Apply the prefix 'tri-' to fluorine because there are three fluorine atoms in NF_3. The prefix 'mono-' is often omitted for the first element, so 'nitrogen' is written without a prefix.
Step 5: Combine the parts to form the correct IUPAC name: 'nitrogen trifluoride'. This name correctly includes the prefix indicating three fluorine atoms and uses the proper element names.
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