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