How do Boron and Nitrogen share electrons in Boron nitride?

Boron nitride has several solid state structures. The most stable is hexagonal and resembles graphite with B and N in alternating positions. Less stable is cubic spalerite structure) that resembles diamond. Another is wurtzite structure. read more

Nitrogen, being the more electronegative element, tends to attract more electrons than Boron. Therefore, Nitrogen is the more negatively-charged element in the covalent bond, since it attracts more electrons. read more

Boron nitride is isoelectronic with graphite. See this site. Three valence electrons from boron; 5 from nitrogen; boron nitride is isoelectronic and (sometimes) isostructural with carbon graphite. I recall that the stuff is a white powder. read more

Boron nitride is a heat and chemically resistant refractory compound of boron and nitrogen with the chemical formula BN. It exists in various crystalline forms that are isoelectronic to a similarly structured carbon lattice. read more