briefly explain electronic charge density.
The electronic charge density is the amount of electric charge in a line, surface, or volume respectively. It is measured in coulombs per meter (C/m), square meter (C/m²), or cubic meter (C/m³), respectively. Since there are positive as well as negative charges, the charge density can take on negative values. Like any density it can depend on position. As related to chemistry, it can refer to the charge distribution over the volume of a particle, molecule, or atom.
Ex-A lithium cation will carry a higher charge density than a sodium cation due to its smaller ionic radius.