All in all, our calculations on pnictogens show that a bonding change occurs in these elements as pressure increases. The A7 phase at RP features a mixture of primary covalent ppσ-bonds plus secondary bonds (related to LEPs), whereas the octahedrally-coordinated HP phases, such as the Ah structure and its slightly distorted structures, feature MMBs that are similar to those already discussed in PCMs, such as IV-VI chalcogenides, which are isoelectronic to pnictogens.