Multiple Choice
When naming an anion formed from a nonmetal element, which suffix is typically added to the root of the element's name?
2
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 formula for the compound formed between magnesium and the phosphate ion?
A
MgPO4
B
Mg3(PO4)2
C
Mg(PO4)2
D
Mg2(PO4)3
Verified step by step guidance1
Identify the charges of the ions involved: magnesium typically forms a Mg^{2+} ion, and the phosphate ion is PO_4^{3-}.
Determine the ratio of magnesium ions to phosphate ions needed to balance the total positive and negative charges so that the compound is electrically neutral.
Set up the charge balance equation: let the number of Mg^{2+} ions be x and the number of PO_4^{3-} ions be y. The total positive charge is 2x and the total negative charge is 3y. For neutrality, 2x = 3y.
Find the smallest whole number ratio of x to y that satisfies 2x = 3y. This ratio is x = 3 and y = 2.
Write the formula using the ratio found: 3 magnesium ions and 2 phosphate ions combine to form Mg_3(PO_4)_2.
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