![]() React violently with alkali metals to form salts.All but O are solid at room temperature.Contains: 3 non-metals, 1 metalloid, and 2 metals.All but N are solid at room temperature Nitrogen.Contains: 2 non-metals, 2 metalloids, and 1 metal.Contains: 1 non-metal, 2 metalloids, and 3 metals.These elements have characteristics of metals and nonmetals.Elements from Groups 13–17 contain some metalloids.A zig-zag line that separates metals from metalloids.Actinides follow the transition metal # 89 Actinium in Period 7.Groups 3-12 Rare Earth Elements ~ Actinides Very small differences between them Cerium.Lanthanides follow the transition metal # 57 Lanthanum in Period 6.Groups 3-12 Rare Earth Elements ~ Lanthanides These two rows are pulled out of sequence and placed below the main table to keep the table from being too wide.Contain: The Lanthanide and Actinide Series.Groups 3-12 Transition MetalsBelow Main Table Good conductors of heat and electricity Copper.Reactivity: less reactive than alkali and alkaline-earth metals.More dense than alkali metals Magnesium.Reactivity: very reactive, but less reactive than alkali metals (Group 1).Groups 13–18 have 10 fewer than the group number.Using the Table to Identify Valence Electrons cont. ![]()
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