Metal M has two electrons in its valence shell (M shell), so it loses two electrons to form M²⁺ ion. Oxygen has six electrons in its valence shell and needs two electrons to complete its octet, forming O²⁻ ion. The compound formed is MO with an ionic bond (transfer of electrons from metal to non-metal). Since the compound is only slightly soluble in water, fewer ions are available in the aqueous solution, resulting in low electrical conductivity. This aligns with the textbook context that ionic compounds conduct electricity when dissolved in water, but slight solubility limits the number of free ions.