Multiple Choice
What is the chemical formula for the compound formed between beryllium and the nitrite ion?
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3. Chemical Reactions
Naming Ionic Compounds
Multiple Choice
What is the chemical formula for the compound formed between beryllium and the chromate ion?
A
BeCrO₄
B
Be₂(CrO₄)₃
C
Be(CrO₄)₂
D
Be₂CrO₄
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Verified step by step guidance1
Identify the charges of the ions involved: Beryllium (Be) typically forms a +2 cation, and the chromate ion (CrO₄) has a -2 charge.
Determine the ratio of ions needed to balance the charges: Since both Be and CrO₄ have charges of +2 and -2 respectively, they will combine in a 1:1 ratio to neutralize the charges.
Write the chemical formula by combining the ions in the ratio determined: Since the charges are balanced with one of each ion, the formula is BeCrO₄.
Consider the other options: Be₂(CrO₄)₃ and Be(CrO₄)₂ would imply different charge balances, which are not needed here as the charges are already balanced with BeCrO₄.
Verify the chemical formula: Ensure that the total positive charge from beryllium equals the total negative charge from the chromate ion, confirming that BeCrO₄ is the correct formula.
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