The Elements - Periodic Table

Niobium For welding rods. Atomic Number: 41 Atomic Symbol: Nb Atomic Weight: 92.9064 Electron Configuration:[Kr]5s^1 4d^4 Histor ...

made with Nb-Zr wire, which retains its superconductivity in strong magnetic fields. This type of application offers hope of dir ...

Technetium For radiation source for medical research. Atomic Number: 43 Atomic Symbol: Tc Atomic Weight: 97 Electron Configurati ...

Properties Technetium is a silvery-gray metal that tarnishes slowly in moist air. The common oxidation states of technetium are ...

Ruthenium For eye treatment. Atomic Number: 44 Atomic Symbol: Ru Atomic Weight: 101.07 Electron Configuration:[Kr]5s^1 4d^7 Hist ...

superconductive at 10.6 K. The corrosion resistance of titanium is improved a hundredfold by addition of 0.1% ruthenium. It is a ...

Rhodium For headlight reflectors. Atomic Number: 45 Atomic Symbol: Rh Atomic Weight: 102.9055 Electron Configuration:[Kr]5s^1 4d ...

Handling Exposure to rhodium (metal fume and dust, as Rh) should not exceed 1 mg/m^3 (8-hour time-weighted average, 40-hour week ...

Palladium For dental crowns. Atomic Number: 46 Atomic Symbol: Pd Atomic Weight: 106.4 Electron Configuration:[Kr]4d^10 History P ...

in making surgical instruments and electrical contacts. Cost The metal sells for about $150/troy oz. Sources: CRC Handbook of Ch ...

Cadmium For rechargeable batteries. Atomic Number: 48 Atomic Symbol: Cd Atomic Weight: 112.40 Electron Configuration:[Kr]5s^2 4d ...

Cost The current price of cadmium is about $12/lb. It is available in high purity form. Isotope Sources: CRC Handbook of Chemist ...

Indium For transistors. Atomic Number: 49 Atomic Symbol: In Atomic Weight: 114.82 Electron Configuration:[Kr]5s^2 4d^10 5p^1 His ...

Handling There is evidence that indium has a low order of toxicity; however, care should be taken until further information is a ...

Tin For organ pipes. Atomic Number: 50 Atomic Symbol: Sn Atomic Weight: 118.69 Electron Configuration:[Kr]5s^2 4d^10 5p^2 Histor ...

important alloys using tin. Tin resists distilled sea and soft tap water, but is attacked by strong acids, alkalis, and acid sal ...

Tellurium For vulcanization of rubber. Atomic Number: 52 Atomic Symbol: Te Atomic Weight: 127.60 Electron Configuration:[Kr]5s^2 ...

Isotopes Thirty isotopes of tellurium are known, with atomic masses ranging from 108 to 137. Natural tellurium consists of eight ...

Iodine For disinfectant. Atomic Number: 53 Atomic Symbol: I Atomic Weight: 126.9045 Electron Configuration:[Kr]5s^2 4d^10 5p^5 H ...

Uses Iodine compounds are important in organic chemistry and very useful in medicine. Iodides, and thyroxine which contains iodi ...