Multiple Choice
In naming binary molecular compounds, what is the correct name for ?
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5. Molecules and Compounds
Naming Binary Molecular Compounds
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What is the correct name for the binary molecular compound ?
A
Dinitrogen pentoxide
B
Nitrogen(V) oxide
C
Dinitrogen monoxide
D
Nitrogen pentoxide
Verified step by step guidance1
Identify the elements present in the compound. Here, the compound consists of nitrogen (N) and oxygen (O).
Determine the number of atoms of each element from the chemical formula \(N_2O_5\). There are 2 nitrogen atoms and 5 oxygen atoms.
Recall the naming rules for binary molecular compounds: use prefixes to indicate the number of atoms of each element (mono-, di-, tri-, tetra-, penta-, etc.). The prefix 'di-' is used for 2 atoms, and 'penta-' is used for 5 atoms.
Name the first element using its full element name with the appropriate prefix (except 'mono-' is usually omitted for the first element). So, 'dinitrogen' for 2 nitrogen atoms.
Name the second element using the prefix and the root of the element name with the suffix '-ide'. For oxygen, the root is 'ox' and with 5 atoms, it becomes 'pentoxide'. Combine both parts to get the full name: 'dinitrogen pentoxide'.
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