(vi) When the formula of a charged coordination entity is to be written
without that of the counter ion, the charge is indicated outside the
square brackets as a right superscript with the number before the
sign For example, [Co(CN)6]
3–, [Cr(H2O)6]
3+, etc (vii) The charge of the cation(s) is balanced by the charge of the anion(s) The names of coordination compounds are derived by following the
principles of additive nomenclature