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Halogens - Definition, Uses, Compounds, Properties of Halogens
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190+ Periodic Table Halogens Chemical Elements Stock Photos, Pictures & Royalty-Free Images - iStock
SOLVED: Periodic table of the elements Alkali metals Halogens Noble gases Rare-earth elements (21,39,57-71) and lanthanoid elements (57-71 only) 8 group Alkaline-earth metals Transition metals Other metals 13 15 He Other nonmetals