Explain the stability of CoF3 Share with your friends Share 0 Geetha answered this CoF3 is an ionic compound, in which Co exist with +3 oxidation state. Co loses its three electron and Fluorine atom accepts the electron and forms ionic bond. While doing so each atom get the stability.Co - 27 - 3d74s2Co3+ - 3d54s1 - (Half filled orbitals are more stable)F - 9 - 2s22p5F- -2s22p6 (octet configuration)Thus CoF3 is stable. The extra stability of this fluoride is due to their 3 D structure. 2 View Full Answer