Twelve icosahedra in which Every boron atom has 5 closest neighbors in the icosahedron. Should the bonding were being the traditional covalent form then Just about every boron might have donated 5 electrons. Even so, boron has only three valence electrons, and it is assumed which the bonding during the https://studio.youtube.com/channel/UCu6cFI-dNTT10D-XkEwYhsw/editing/profile