Zirconium

Science / Chemistry / Zirconium: Element 40, atomic weight 91.22, a hard, grayish, highly flammable crystalline metal that dissolves in hot concentrated acids. Used in steel manufacture and in nuclear reactor chambers because of its transparency to neutrons. Its silicate is used to make zircon used as a gemstone.

Zirconium (Zr)

Science / Periodic Table of Elements / Zirconium (Zr): Atomic number: 40, Atomic mass: 91.22 g.mol -1, Electronegativity: 1.2, Density: 6.49 g.cm-3 at 20°C, Melting point: 1852 °C, Boiling point: 4400 °C, Vanderwaals radius: 0.160 nm, Ionic radius: 0.0 MORE

Zirconium Lamp

Entertainment / Photography / Zirconium Lamp: Is an arc lamp used in powerful enlarges and projectors. MORE

Hafnium (Hf)

Science / Periodic Table of Elements / Hafnium (Hf): Atomic number: 72, Atomic mass: 178.49 g.mol -1, Electronegativity: 1.3, Density: 13.07 g.cm-3 at 20°C, Melting point: 2200 °C, Boiling point: 5200 °C, Vanderwaals radius: 0.161 nm, Ionic radius: 0 MORE

Calcium (Ca)

Science / Periodic Table of Elements / Calcium (Ca): Atomic number: 20, Atomic mass: 40.08 g.mol -1, Electronegativity: 1.0, Mass volume: 1.6 g.cm-3 at 20°C, Melting point: 840 °C, Boiling point: 1484 °C, Vanderwaals radius: 0.197 nm, Ionic radius: 0 MORE

Titanium (Ti)

Science / Periodic Table of Elements / Titanium (Ti): Atomic number: 22, Atomic mass: 47.90 g.mol -1, Electronegativity: 1.5, Density: 4.51 g.cm-3 at 20°C, Melting point: 1660 °C, Boiling point: 3287 °C, Vanderwaals radius: 0.147 nm, Ionic radius: 0.0 MORE

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