Sure, I'd be happy to help you with that!
1. When strontium (Sr) and chlorine (Cl) combine to form an ionic compound, the formula for the compound would be SrCl2.
2. In this compound, the strontium ion (Sr) has a 2+ charge because it loses two electrons to achieve a stable electron configuration, becoming a cation. On the other hand, the chlorine ion (Cl) gains one electron to attain a full outer shell, giving it a 1- charge, making it an anion. Since one strontium ion can combine with two chloride ions to balance the charges, the formula SrCl2 is formed.
By understanding the charges of the ions involved and balancing them to achieve an electrically neutral compound, we can determine the correct formula for the ionic compound formed by strontium and chlorine.