General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

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General science

mercury (element)

Science; General science

A chemical element, Hg, atomic number 80 and atomic weight 200.59. Mercury is a silverwhite liquid at room temperature (melting point −38.89°C or −37.46°F); it boils at 357.25°C (675.05°F) under ...

A chemical element, Ho, atomic number 67, atomic weight 164.93, a metallic element belonging to the rare-earth group. The stable isotope 165 Ho makes up 100% of the naturally occurring element. The ...

indium

Science; General science

A chemical element, In, atomic number 49, a member of group 13 and the fifth period of the periodic table. Indium has a relative atomic weight of 114.82. Indium occurs in the Earth's crust to the ...

iridium

Science; General science

A chemical element, Ir, atomic number 77, relative atomic weight 192.22. Iridium is a transition metal and shares similarities with rhodium as well as the other platinum metals, including palladium, ...

potassium

Science; General science

A chemical element, K, atomic number 19, and atomic weight 39.102. It stands in the middle of the alkali metal family, below sodium and above rubidium. This lightweight, soft, low-melting, reactive ...

lanthanum

Science; General science

A chemical element, La, atomic number 57, atomic weight 138.91. Lanthanum, the second most abundant element in the rare-earth group, is a metal. The naturally occurring element is made up of the ...

lithium

Science; General science

A chemical element, Li, atomic number 3, and atomic weight 6.939. Lithium heads the alkali metal family in the periodic table. In nature it is a mixture of the isotopes 6 Li and 7 Li. Lithium, the ...