Multiple Choice
Which of the following is the correct chemical formula for calcium nitrite?
43
views
3. Chemical Reactions
Naming Ionic Compounds
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the correct name for the compound with the formula MgCrO4?
A
Magnesium chlorate
B
Magnesium chromate
C
Magnesium dichromate
D
Magnesium carbonate
Verified step by step guidance1
Identify the ions present in the compound MgCrO4. Magnesium (Mg) typically forms a +2 cation, Mg^{2+}.
Recognize the anion CrO4^{2-}, which is the chromate ion, not chlorate (ClO3^{-}) or carbonate (CO3^{2-}).
Since the charges of Mg^{2+} and CrO4^{2-} balance each other in a 1:1 ratio, the formula MgCrO4 corresponds to magnesium chromate.
Recall that magnesium dichromate would have the formula MgCr2O7, involving the dichromate ion Cr2O7^{2-}, which is different from chromate.
Therefore, the correct name for MgCrO4 is magnesium chromate, based on the combination of Mg^{2+} and CrO4^{2-} ions.
2:11mWatch next
Master Ionic Compounds Naming with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Naming Ionic Compounds practice set
Problem sets built by lead tutorsExpert video explanations