We’re being asked how many atoms does the prefix penta- specify.
Recall that we use these prefixes in naming covalent compounds.
A covalent or molecular compound is composed of more than one nonmetal together.
Rules for naming molecular compounds:
1. The first nonmetal is named normally and uses numerical prefixes except mono.
2. The second nonmetal keeps its base name but has its ending changed to -ide.
How many atoms does each of the following prefixes specify?
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