Multiple Choice
Which of the following is the correct chemical formula for table salt?
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3. Chemical Reactions
Naming Ionic Compounds
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What is the correct name for the compound P_2O_5?
A
Phosphorus(V) oxide
B
Phosphorus pentachloride
C
Diphosphorus oxide
D
Diphosphorus pentoxide
Verified step by step guidance1
Identify the elements present in the compound P_2O_5: phosphorus (P) and oxygen (O).
Determine the number of atoms of each element in the formula: 2 phosphorus atoms and 5 oxygen atoms.
Use the appropriate prefixes to indicate the number of atoms: 'di-' for 2 and 'penta-' for 5.
Name the first element (phosphorus) with the prefix 'di-' to indicate two atoms, resulting in 'diphosphorus'.
Name the second element (oxygen) with the prefix 'penta-' and modify the ending to '-oxide', resulting in 'pentoxide'; combine both to get 'diphosphorus pentoxide'.
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