Band Theory of bonding in Sol ids Changing from“Bond"to“Band” In solid where huge number of atoms exist closely pack ) discrete MOs become continuous bands erets 3X1029 ±))(+(+) +) 25 Fig. 6. 9 Electron sea model for metals 2e2 2 Band Theory of Bonding in Solids ⚫ Changing from “Bond” to “Band” ◼ In solid where huge number of atoms exist (& closely pack), discrete MOs become continuous bands. 2