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🌙 COLDPLAY ANNOUNCE MOON MUSIC OUT OCTOBER 4TH 🎵

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rudy_o

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They're in the middle.:) They have several oxidation states, and are often chemically bland, but a few give great colors to fireworks, and some are colorful in themselves (copper, gold). They often make colorful compounds with other elements. Some are important components of alloys. They're the most numerous on the periodic chart, and many are common elements found within the earth's crust. They're not nearly as reactive as the group I or II metals, nor the group VI oxidizers, or group VII halogens. And the incomplete d subshell in the outer orbitals is an important part of their electron shell structure. Typical examples include: vanadium, iron, cobalt, tungsten. Nested within the transition group elements are the noble metals (so-named because of their low reactivity to form compounds with oxidizers). Included are: gold, platinum...

 

By strict IUPAC definition, Mercury, Cadmium, and Zinc are not considered true "transition" metals because they have a completely filled d sub-shell (d10). But in a general sense, sometimes are considered transition elements by location within the periodic chart..

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