MgB 2 A crystalline intermetallic compound, produced as a black powder, that becomes superconducting at the unusually high temperature of 39 K (_389_F; _234_C); melts at 800 _C. ...
SiCl 4 A clear, corrosive, fuming liquid with suffocating aroma; decomposes in water and alcohol; boils at 57.6_C; used in warfare smoke screens, to make ethyl silicate and ...
3ZnO_2B 2 O 3 A white, amorphous powder that is soluble in dilute acids, slightly soluble in water; melts at 980_C; used in medicine, as a ceramics flux, as an inhibitor for ...
Co(NO 3 ) 2 _6H 2 O A red crystalline compound with a melting point of 56_C; soluble in organic solvents; used in sympathetic inks, as an additive to soils and animal feeds, and ...
Hg(CN) 2 Poisonous, colorless, transparent crystals that darken in light, decompose when heated; soluble in water and alcohol; used in photography, medicine, and germicidal ...
Greek mountain and pilgrimage site, known as the birthplace of early Christian Orthodox monasticism, housing around 20 Eastern Orthodox monasteries. ...
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