ocr: - Radioactive L ATOMIC NO. -+848- METALLOID elementstoleft ofmetalloids 2 1H CHEMICAL Po are: metals; toright, non-metals) GROUPS He 1.008 2 SYMBOL (209) 3 4 5 6 7 4.003 3 4 ATOMIC WEIGHT 5 - 6 7 8 9 10 Li 6.940 Be 9.013 Farenthesesindicate element is artificially B 10.82 - C - N E01J4005153932300 O - - F 20.183 Ne 11 12 prociced&: mass number oflongest-lived 13 14 15 16 17 18 0. 23 22.991 Na Mg 24.32 isotope. TRANSITION ELEMENTS Al 26.98 28.09 Si P 30.975132.06 S Cl B5.457B9.944 Ar L 14 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga Ge 32833834 As Se 35 Br 36 Kr 3 ...
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