This element’s hydrides are classified as “nido” or “arachno” (10[1])by counting skeletal electron pairs in the Wade–Mingos rules. This element forms the anti-Markovnikov (10[1])product when added across a double bond, and is then oxidized with hydrogen peroxide to form alcohols in a reaction named “hydro [this element].” (-5[1])The wurtzite form of this element’s nitride is harder than diamond. A canonical Lewis acid is this (10[1])element’s trifluoride, which is planar since this element (10[1])violates the octet rule and only (10[1])has three valence electrons. For 10 points, what metalloid is located above aluminum on the periodic table and has atomic number five? ■END■