This element’s hydrides are classified as “nido” or “arachno” by counting skeletal (10[1])electron pairs in the Wade–Mingos rules. 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 element].” (10[1])The wurtzite form of this element’s nitride is harder than diamond. A canonical Lewis (-5[1])acid (10[1])is this element’s trifluoride, which is planar (10[1])since this element violates (10[2])the octet rule and only has three (-5[1])valence (10[2])electrons. (-5[1])For 10 points, what metalloid is located above aluminum on the periodic table and has atomic number five? ■END■ (10[3])