Multiple Choice
Calcium chloride contains only calcium and chloride ions. What is the correct chemical formula for this compound?
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3. Chemical Reactions
Naming Ionic Compounds
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What is the ratio of sodium ions to bromide ions in a neutral compound of sodium bromide?
A
1:2
B
2:1
C
1:1
D
2:3
Verified step by step guidance1
Identify the chemical formula of sodium bromide, which is NaBr.
Recognize that sodium bromide is an ionic compound composed of sodium ions (Na\textsuperscript{+}) and bromide ions (Br\textsuperscript{-}).
Understand that in a neutral compound, the total positive charge must balance the total negative charge.
Since sodium has a +1 charge and bromide has a -1 charge, one sodium ion pairs with one bromide ion to maintain electrical neutrality.
Therefore, the ratio of sodium ions to bromide ions in sodium bromide is 1:1.
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