Yttrium

Yttrium is a chemical element with symbol "Y"  and atomic number 39. It is a silvery-metallic transition metal chemically similar ... [Read More]

Strontium

Strontium is a chemical element with symbol "Sr"  and atomic number 38. An alkaline earth metal, strontium is a soft silver-white ... [Read More]

Rubidium

Rubidium is a chemical element with the symbol "Rb"  and atomic number 37. Rubidium is a soft, silvery-white metallic element of t... [Read More]

Krypton

Krypton is a fictional planet in the DC Universe and the native world of Superman. In some stories, it is also the native world of Supergirl... [Read More]

Bromine

Bromine is a chemical element with the symbol  "Br" , and atomic number of 35. It is in the halogen group (17). The element was is... [Read More]

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