Final answer:
The chemical formula for lithium nitrate is LiNO3, with one lithium ion (Li+) balancing out one nitrate ion (NO3-).
Step-by-step explanation:
The chemical formula for lithium nitrate is LiNO3. In this compound, the lithium ion (Li+) carries a charge of +1, and the nitrate ion (NO3-) carries a charge of -1. Since the charges are equal and opposite, the correct answer in each box for the ratio of lithium ions to nitrate ions is 1:1, making the chemical formula for lithium nitrate LiNO3.
When writing chemical formulas for ionic compounds, such as lithium nitrate, we make sure that the overall compound is neutral by balancing the total positive and negative charges. The crisscross method is a handy tool for finding the right subscripts, but in this case, since the charges are both 1, no crisscross is needed.