Which atom, if any, in the shown covalent bonds acquires a partial NEGATIVE charge? Specify the correct atom by its chemical symbol, e.g. Br. If none of them bears a negative charge, write, "none." (To answer this question you may consult the table of electronegativity values in the table below.) 1A 2A 2.1 3A 4A5A6A7A Li Be B C N 0 1.0 F 1.5 2.0 2.5 3.0 3.5 4.0 Na Mg 8B AI Si P S GI 0.9 1.2 3B 4B 5B 6B 7B IB 2B 1.5 1.8 2.1 2.5 3.0 Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br 0.8 1.0 1.3 1.5 1.6 1.6 1.5 1.8 1.8 1.8 1.9 1.6 1.8 2.0 2.4 2.8 Rb Sr Y Zr Nb Mo Rh Pd Ag Cd In Sn Sb 1 0.8 1.0 1.2 1.4 1.6 1.8 1.9 2.2 2.2 2.2 1.9 1.7 1.7 1.8 1.9 2.1 2.5 Cs Ba La HO Ta W Re Os Ir PL Au Hg TI Pb Bi Po AI 0.7 0.9 1.3 1.5 1.7 1.9 2.2 2.2 2.2 2.4 1.9 1.8 1.8 1.9 2.0 2.2 1.6 Ru Te 1.1