Twelve icosahedra in which Each individual boron atom has five nearest neighbors inside the icosahedron. If the bonding were the standard covalent type then Every boron would've donated 5 electrons. Even so, boron has only 3 valence electrons, and it is believed that the bonding while in the B The https://us.enrollbusiness.com/BusinessProfile/6980265/Luoyang%20Tongrun%20Nano%20Technology%20Co.,%20Ltd.