boron

The chemical element (symbol B) with an atomic number of 5, which is a metalloid found in its pure form as a dark amorphous powder.

The B₆-type octahedral borons are each bonded to five other boron atoms; four are part of the same octahedron, and one is external to this octahedron.

PIRG noted the European Union has a limit of 300 ppm for boron and that there should be a “full-fledged investigation to determine if limits should be established” in the US.

A single atom of this element.

For each X point, four borons in the same plane composing a B₆ cluster provide these orbitals.

A surname.

A census-designated place in Kern County, California, United States.