To a child's body, lead looks like calcium because they both have same ionic charge and size.
From the sciencedaily.com
This means that FDG is trapped in any cell that takes it up, until it decays, since phosphorylated sugars, due to their ionic charge, cannot exit from the cell.
From the en.wikipedia.org
The molecules involved are ionic, i.e., carry an electric charge that can change when they react with other molecules.
From the sciencedaily.com
These gas-like ions rapidly interact with ions of opposite charge to give neutral molecules or ionic salts.
From the en.wikipedia.org
The negative charge of the Fermi sea is balanced by the positively-charged ionic lattice of the material.
From the en.wikipedia.org
In chemistry, a salt is an ionic compound made up of cations and anions, forming a neutral product with no net charge.
From the sciencedaily.com
Formally, oxidation state is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic.