Metals: Zirconium, Co, Conducts Electricity, High Luster, Malleable, Typically Solid at 25ºC, Loses electrons to form an ion, Nonmetals: Chlorine, H, Insulator, Dull Luster, Brittle, Can be solid, liquid, or gas at 25ºC, Gains electrons to form an ion, Metalloids: B, As, Semiconductor, ALL are solid at 25ºC, Can form cations or anions, Antimony, Found in Groups 13-17,

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