Multiple Choice
What is the correct name for the compound SnCl_2?
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3. Chemical Reactions
Naming Ionic Compounds
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Given that the ratio of Na to O in an ionic compound is 2:1, what is the correct chemical formula for this compound?
A
Na2O
B
NaO2
C
Na2O2
D
NaO
Verified step by step guidance1
Identify the ions involved and their charges: Sodium (Na) typically forms a +1 ion (Na\^+), and Oxygen (O) typically forms a -2 ion (O\^{2-}).
Determine the ratio of ions needed to balance the overall charge to zero. Since the problem states the ratio of Na to O is 2:1, this suggests 2 sodium ions for every 1 oxygen ion.
Write the formula by combining the ions in the ratio that balances the charges. With 2 Na\^+ ions (total charge +2) and 1 O\^{2-} ion (charge -2), the charges balance out to zero.
Express the chemical formula by placing the number of each ion as subscripts: $\mathrm{Na_2O}$.
Confirm that the formula matches the given ratio and charge balance, ensuring the compound is electrically neutral.
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