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2. Platinum - Wikipedia

   en.wikipedia.org/wiki/Platinum

   Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". [7] [8] Platinum is a member of the platinum group of elements and group 10 of the periodic table of ...

3. Native metal - Wikipedia

   en.wikipedia.org/wiki/Native_metal

   Only gold, silver, copper and the platinum group occur native in large amounts. [citation needed] Over geological time scales, very few metals can resist natural weathering processes like oxidation, so mainly the less reactive metals such as gold and platinum are found as native metals. The others usually occur as isolated pockets where a ...

4. Magnesium - Wikipedia

   en.wikipedia.org/wiki/Magnesium

   Magnesium reacts with haloalkanes to give Grignard reagents, which are used for a wide variety of organic reactions forming carbon–carbon bonds. [98] Magnesium salts are included in various foods, [99] fertilizers [100] (magnesium is a component of chlorophyll [101]), and microbe culture media. [102]

5. Noble metal - Wikipedia

   en.wikipedia.org/wiki/Noble_metal

   A noble metal is ordinarily regarded as a metallic element that is generally resistant to corrosion and is usually found in nature in its raw form. Gold, platinum, and the other platinum group metals (ruthenium, rhodium, palladium, osmium, iridium) are most often so classified.

6. Abundance of elements in Earth's crust - Wikipedia

   en.wikipedia.org/wiki/Abundance_of_elements_in...

   Abundance (atom fraction) of the chemical elements in Earth's upper continental crust as a function of atomic number; [5] siderophiles shown in yellow Graphs of abundance against atomic number can reveal patterns relating abundance to stellar nucleosynthesis and geochemistry.

7. The 6 Best Magnesium Supplements, According to ... - AOL

   www.aol.com/lifestyle/6-best-magnesium...

   Magnesium Citrate. At just $0.47 per dose, Nature Made Magnesium Citrate capsules are our favorite budget-friendly magnesium supplement. Even at a lower price, this choice is USP certified, so you ...