Multiple Choice
Which two elements make up household ammonia?
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3. Chemical Reactions
Naming Molecular Compounds
Multiple Choice
What is the correct name for the molecular compound with the formula BBr_3?
A
Boron tribromide
B
Boron bromide
C
Boron dibromide
D
Boron trichloride
Verified step by step guidance1
Identify the elements present in the molecular compound. Here, B represents boron and Br represents bromine.
Determine the number of atoms of each element in the formula. The formula BBr_3 indicates 1 boron atom and 3 bromine atoms.
Recall the naming rules for molecular (covalent) compounds: use prefixes to indicate the number of atoms (mono-, di-, tri-, tetra-, etc.), except the prefix 'mono-' is often omitted for the first element.
Name the first element (boron) without a prefix since there is only one atom of boron.
Name the second element (bromine) with the appropriate prefix for three atoms, which is 'tri-', and change the ending of bromine to '-ide', resulting in 'tribromide'. Combine the names to get 'boron tribromide'.
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