Question

can co-ordinate compound have negative charge for give examples

Answer 1

In chemistry, a coordination complexconsists of a central atom or ion, which is usually metallic and is called thecoordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents. Many metal-containing compounds, especially those of transition metals, are coordination complexes.A coordination complex whose centre is a metal atom is called ametal complex.