GCSE; CCEA Double Award; Bonding - (CCEA) Dot and cross diagrams to show formation of ions Atoms and ions bond with each other in three main ways – ionic bonds, covalent bonds and metallic bonds.

He used it to solve the structure of a newly synthesized form of pure boron that displays some unusual physical properties and brings a surprise: it is partially ionic. The new structure can be ...

Although boron has been known since 1808, a reasonably pure form was only isolated in 1909, and its full phase diagram is still not well understood and its stable phase at normal conditions is yet ...

Until now largely obscure, boron occupies a special spot in the periodic table. On one side are metals like beryllium, which give away their outermost electrons to form ionic bonds.