Multiple Choice
Which of the following is the correct chemical formula for sodium sulfate?
3
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
Which of the following is the correct chemical formula for strontium fluoride?
A
Sr2F
B
SrF2
C
Sr2F2
D
SrF
Verified step by step guidance1
Identify the charges of the ions involved: strontium (Sr) is an alkaline earth metal in Group 2, so it typically forms a Sr^{2+} ion, and fluoride (F) is a halogen in Group 17, forming an F^{-} ion.
Determine the ratio of ions needed to balance the overall charge to zero. Since Sr^{2+} has a +2 charge and F^{-} has a -1 charge, two fluoride ions are needed to balance one strontium ion.
Write the chemical formula by combining one Sr^{2+} ion with two F^{-} ions, resulting in SrF_2, where the subscript 2 indicates two fluoride ions.
Check the other options to see if they correctly balance the charges: Sr_2F would have a net positive charge, Sr_2F_2 simplifies to SrF, and SrF would have an unbalanced charge.
Conclude that the correct chemical formula for strontium fluoride is SrF_2, reflecting the proper ionic ratio for charge neutrality.
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