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chemeurope.com's Encyclopedia of Chemistry provides articles for 64,557 entries from chemistry, pharmaceutics and material sciences as well as related scientific disciplines.

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Technetium |- | Electron affinity || -53 kJ/mol Technetium () is the lightest chemical element with no stable isotope . It has atomic number 43 and is given the symbol Tc. The chemical properties of this silvery grey, crystalline transition metal are inte more

Photon

Photon In physics , the photon is the elementary particle responsible for electromagnetic phenomena. It is the carrier of electromagnetic radiation of all wavelength s, including gamma ray s, X-ray s, ultraviolet light , visible light , infrared light , microwave s, and radio waves . The ph more

Black pepper

Black pepper Black pepper (Piper nigrum) is a flowering vine in the family Piperaceae , cultivated for its fruit , which is usually dried and used as a spice and seasoning . The same fruit is also used to produce white pepper, red/pink pepper, and green pepper. Black pepper is native to South more

Titanium

Titanium Titanium () is a chemical element with the symbol Ti and atomic number 22. It is a light, strong, lustrous, corrosion -resistant (including resistance to sea water and chlorine ) transition metal with a grayish color . Titanium can be alloy ed with other elements such as iron , alumin more

RNA interference

RNA interference trims double stranded RNA, to form small interfering RNA or microRNA . These processed RNAs are incorporated into the RNA-induced silencing complex (RISC), which targets messenger RNA to prevent translation . RNA interference (RNAi) is a mechanism that inhibits gene expression more

Chemical elements