객관식
Which of the following is the correct chemical formula for dinitrogen pentoxide?
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객관식
Which is the correct name for the compound PCl_5?
A
Phosphoric chloride
B
Phosphorus pentachlorate
C
Phosphorus chloride
D
Phosphorus pentachloride
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검증된 단계별 안내1
Identify the elements in the compound PCl_5: P stands for phosphorus and Cl stands for chlorine.
Determine the number of atoms of each element in the compound: there is 1 phosphorus atom and 5 chlorine atoms.
Use the appropriate prefixes to indicate the number of atoms: 'pent-' is the prefix for 5.
Combine the element names with the prefixes, noting that the first element (phosphorus) does not use the prefix 'mono-' when there is only one atom, and the second element (chlorine) changes its ending to '-ide' to become 'chloride'.
Put it all together to form the correct name: 'Phosphorus pentachloride'.
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