The Elements - Periodic Table
known about the properties of metallic promethium. Two allotropic modifications exist. Uses The element has applications as a be ...
Samarium For lasers. Atomic Number: 62 Atomic Symbol: Sm Atomic Weight: 150.4 Electron Configuration:[Xe]6s^2 4f^6 History (Sama ...
Uses Samarium, along with other rare earths, is used for carbon-arc lighting for the motion picture industry. SmCo 5 has been us ...
Gadolinium For computer memory. Atomic Number: 64 Atomic Symbol: Gd Atomic Weight: 157.25 Electron Configuration:[Xe]6s^2 4f^7 5 ...
oxide film which spalls off and exposes more surface to oxidation. The metal reacts slowly with water and is soluble in dilute a ...
Terbium For fluorescent lamps. Atomic Number: 65 Atomic Symbol: Tb Atomic Weight: 158.9254 Electron Configuration:[Xe]6s^2 4f^9 ...
Cost The element is priced at about $30/g (99.9%). Handling Little is known of the toxicity of terbium. It should be handled wit ...
Dysprosium For color TV tubes. Atomic Number: 66 Atomic Symbol: Dy Atomic Weight: 162.50 Electron Configuration:[Xe]6s^2 4f^10 H ...
Cost The cost of dysprosium metal has dropped in recent years since the development of ion-exchange and solvent extraction techn ...
Holmium For eye-safe lasers. Atomic Number: 67 Atomic Symbol: Ho Atomic Weight: 164.9304 Electron Configuration:[Xe]6s^2 4f^11 H ...
Erbium For coating for sunglasses. Atomic Number: 68 Atomic Symbol: Er Atomic Weight: 167.26 Electron Configuration:[Xe]6s^2 4f^ ...
Thulium For lasers. Atomic Number: 69 Atomic Symbol: Tm Atomic Weight: 168.9342 Electron Configuration:[Xe]6s^2 4f^13 History (T ...
Ytterbium For dentures. Atomic Number: 70 Atomic Symbol: Yb Atomic Weight: 173.04 Electron Configuration:[Xe]6s^2 4f^14 History ...
high-temperature gamma form is a body-centered cubic form. Another body-centered cubic phase has recently been found to be stabl ...
Lutetium For dentures. Atomic Number: 71 Atomic Symbol: Lu Atomic Weight: 174.97 Electron Configuration:[Xe]6s^2 4f^14 5d^1 Hist ...
Protactinium Atomic Number: 91 Atomic Symbol: Pa Atomic Weight: 231.0359 Electron Configuration:[Rn]7s^2 5f^2 6d^1 History (Gr. ...
Uranium For Nuclear Fission Atomic Number: 92 Atomic Symbol: U Atomic Weight: 238.029 Electron Configuration:[Rn]7s^2 5f^3 6d^1 ...
It is a little softer than steel, and is attacked by cold water in a finely divided state. It is malleable, ductile, and slightl ...
nuclear fuel. One pound of completely fissioned uranium has the fuel value of over 1500 tons of coal. The uses of nuclear fuels ...
Neptunium Atomic Number: 93 Atomic Symbol: Np Atomic Weight: 237.0482 Electron Configuration:[Rn]7s^2 5f^4 6d^1 History (Planet ...
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