In a molecule, the correct decreasing order of the repulsive interectlon of electron pairs is, lone pair-lone pair > lone pair-bond pair > bond pair-bond pair.
Two atoms share bond pairs of electrons, whereas the lone pair of electrons is only influenced by the central atom. As a result, the electron cloud of a lone pair takes up more space than that of a bond pair. The lone pair-lone pair repulsion is increased as a result of this.