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P 3 ) N a Mg A I Si P S Cl Ar 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge AS Se Br Kr 5 Rb Sr Y Zr m Mo Tc Ru Rh Pd AO Cd In Sn Sb Te 1 Xe 6 Gs Ba La HI Ta w Re Os Ir Pt Au Hg TI Pb Bi Po At Rn 7 Fr Rd AC Large Radii 3 Ci