Multiple Choice
Which of the following is the correct chemical formula for phosphorus trichloride?
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3. Chemical Reactions
Naming Molecular Compounds
Multiple Choice
What is the correct name for the molecular compound with the formula NO_2?
A
Nitrogen dioxide
B
Nitrogen oxide
C
Nitrous oxide
D
Dinitrogen oxide
Verified step by step guidance1
Identify the elements present in the molecular formula NO_2: nitrogen (N) and oxygen (O).
Determine the number of atoms of each element in the molecule: 1 nitrogen atom and 2 oxygen atoms.
Recall the naming conventions for molecular compounds, which use prefixes to indicate the number of atoms: 'mono-' for 1, 'di-' for 2, etc. The prefix 'mono-' is often omitted for the first element.
Apply the prefixes to the elements: since there is 1 nitrogen atom, no prefix is used for nitrogen; for 2 oxygen atoms, use the prefix 'di-'.
Combine the element names with the prefixes and modify the second element's ending to '-ide', resulting in the name 'Nitrogen dioxide'.
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