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essential ideas about redox reactions and electrolysis, and covers the trends in period and groups , , and of the periodic table. plus: lengthy sections on the chemistry of some important complex ions, and of common transition metals. extraction and uses of aluminium, copper, iron, titanium and tungsten
essential ideas about redox reactions and electrolysis, and covers the trends in period and groups , , and of the periodic table. plus: lengthy sections on the chemistry of some important complex ions, and of common transition metals. extraction and uses of aluminium, copper, iron, titanium and tungsten...
https://www.chemguide.co.uk/index.html
conflict minerals policy page of effective date: may , acco brands corporation conflict minerals policy conflict minerals policy page of effective date: may , background a portion of our products contain various metals, including tantalum, tin, tungsten and gold. occasionally, these metals may be colloquially
decade-long civil war is ongoing. armed groups control some of these mines and the related minerals trade, using the proceeds to fund human rights abuses. as used herein, "conflict minerals" include columbite-tantalite (coltan), cassiterite, gold, wolframite and the derivatives tantalum, tin and tungsten...
https://www.accobrands.com/siteassets/values/corporate-social-page/conflict-minerals-policy.pdf