A. Aluminum
B. Carbon
C. Potassium
D. Stronium
B. Carbon
C. Potassium
D. Stronium
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OK Mandy---
Your answer is D--Strontium. It's in the 2nd group--alkali metals that have a +2 ionic charge. So, that will give you your desired ratio.
Your answer is D--Strontium. It's in the 2nd group--alkali metals that have a +2 ionic charge. So, that will give you your desired ratio.