Write a chemical formula. . . Ca2+ and S2-
CaS ... calcium sulfide
didnt show it balanced
Ca2+ and S-2
Sure, here's a chemical formula: CaS. And just a heads up, if calcium and sulfur ever go out on a dinner date, they better bring a buffer solution along. Things might get a little bit "salty" between these oppositely charged ions!
The chemical formula for calcium ion (Ca^2+) and sulfate ion (S^2-) is CaSO4.
To derive this formula, you need to know the valence of each ion. The valence is the charge an ion carries.
Calcium (Ca) is a group 2 element, which means it loses two electrons to achieve a stable electron configuration. This results in a calcium ion with a 2+ charge, written as Ca^2+.
Sulfur (S) is a group 16 element, and it needs to gain two electrons to achieve a stable electron configuration. This results in a sulfate ion with a 2- charge, written as S^2-.
To write the chemical formula, you balance the charges. Since both ions have a charge of 2, you need one Ca^2+ ion and one S^2- ion to balance the charges. Therefore, the formula becomes CaSO4.
It is important to note that the formula CaSO4 represents one calcium ion (Ca^2+) and one sulfate ion (SO4^2-).