Harlequin Ichthyosis Causes. The harlequin ichthyosis is known to be genetic in nature. The ABC 12 gene, which directs the protein production that is necessary to have a normal skin growth, is being mutated which leads to this severe skin disorder. It is a gene that is responsible for the transportation of lipid.
Boron (IPA: /ËbÉËrÉn/) is a chemical element with atomic number 5 and the chemical symbol B. A trivalent compound containing boron occurs abundantly in the ore borax. Boron is never found free in nature, and is a non-metal. Several allotropes of boron exist; amorphous boron is a brown powder, though crystalline boron is black, hard (9.3 on Mohs' scale), and a weak conductor at room temperature.
Main Image: Boron is a semi-metallic element which displays the properties of both metal and non-metal. Boron is the only non-metal of the group 13 of the periodic table elements. It is dark, amorphous (solid that lacks the characteristic of a crystal) and non-reactive solid in its elemental form. At room temperature, it is a poor electrical conductor, but it is a good conductor at high temperatures. 2  It is solid in standard state at 298 Kelvin. 3  It belongs to group 13 in periodic table. 4  Crystalline boron is a very hard, black material with a high melting point of above 2000 Â°C.