This is due to the increased positive charge on the metal ion and the increased number of electrons that are delocalised, resulting in stronger bonding.

SUNAYANA: This is the fifth episode in an eight-part series on bonding, structure and properties. In this episode, we’re going to look at metallic bonding and properties of metals. TULELA ...

Figure 2: SCAN simultaneously describes covalent and metallic bonding across the Si phase ... We have demonstrated that accurate first-principles structures and energies of molecules and materials ...