Explore BrainMass

Predicting Formulas of Ionic Compounds

Predict the formulas of the ionic compounds formed by the following elements:

1. lithium and oxygen (Li and O)
2. nickel and sulfur (Ni and S)
3. bismuth and fluorine (Bi and F)
4. magnesium and chlorine (Mg and Cl)

Solution Preview

First, look at the locations of the elements on the Periodic Table. Atoms in the same column as each other (Group) tend to exhibit similar characteristics, including the number of electrons the elements would need to gain or lose to resemble the nearest noble gas atom. To determine common ionic compounds ...