Final answer:
To write the formulas for compounds, determine the charges of the ions involved. For example, in strontium nitrate (Sr(NO3)2), strontium ion (Sr2+) has a charge of +2 and nitrate ion (NO3-) has a charge of -1. This knowledge can be used to determine the formulas for other compounds as well.
Step-by-step explanation:
To write the formulas for the compounds, you need to know the charges of the ions involved. The charges can be determined based on the periodic table. For example, in strontium nitrate (Sr(NO3)2), strontium ion (Sr2+) has a charge of +2 and nitrate ion (NO3-) has a charge of -1. To balance the charges and make the compound neutral, you need two nitrate ions for every strontium ion, so the formula is Sr(NO3)2. Similarly, you can determine the formulas for calcium chloride (CaCl2), sodium nitrate (NaNO3), barium chloride (BaCl2), and copper(I) chloride (CuCl).
To balance the charges and make the compound neutral, you need two nitrate ions for every strontium ion, so the formula is Sr(NO3)2. Similarly, you can determine the formulas for calcium chloride (CaCl2), sodium nitrate (NaNO3), barium chloride (BaCl2), and copper(I) chloride (CuCl).