Service-Hotline: +43-1-2936882   Visit us on facebook      

A leading supplier for high purity elements, periodic table display samples for research, education and collection - Living science...
   Home | About us | About the Elements | Terms/conditions | References | Sponsoring |Guestbook | Contact | Deutsch

H
Hydrogen
Atomic no.:
1
Atom. weight: 1.00794
Density: 0.08988
Class:
Gas
Melting point: -259.14°C
Boiling point: -252.76°C
Colour: colourless
   
Discoverer: Henry Cavendish
Place: London, England
Year: 1766

Hydrogen. from the greek words "hydro" and "genes" meaning "Water-generator"
Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up about about 90% of the universe by weight. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic compounds. Hydrogen gas was used in lighter-than-air balloons for transport but is far too dangerous because of the fire risk (Hindenburg).

Deuterium, also called heavy hydrogen, is one of two stable isotopes of hydrogen with a natural abundance in Earth's oceans of about one atom in 6,400 of hydrogen (~156.25 ppm). Deuterium accounts for approximately 0.0156% (or on a mass basis: 0.0312%) of all naturally occurring hydrogen in Earth's oceans, while the most common isotope (hydrogen-1 or protium) accounts for more than 99.98%. The abundance of deuterium changes slightly from one kind of natural water to another. The nucleus of deuterium, called a deuteron, contains one proton and one neutron, whereas the far more common hydrogen isotope, protium, has no neutron in the nucleus. The deuterium isotope's name is formed from the Greek deuteros meaning "second", to denote the two particles composing the nucleus.

Tritium is an isotope of hydrogen which has one proton and two neutrons . It emits beta particles only and has a half-life of 12.3 years. The maximum beta energy is 18 keV, and the mean beta energy is 6 keV. A beta particle with energy of less than 70 keV will not penetrate the dead outer layer of the skin. Therefore, tritium is not an external radiation hazard , but when taken into the body it becomes an internal hazard .

Views: 302619



  entries 1 to 1 from 1 Gallery view   periodic table

  Categories:  
  ampoules     Sets     discharge tubes     Acrylic blocks     All categories  

 Deuterium discharge tube, size approximately ~75x75mm  Art. Nr. 003860  
Deuterium discharge tube, size approximately ~75x75mm
magnify Click to zoom!

 

The ultimate Deuterium tube without metal electrodes - Made in Germany

 

Size of the tube ~ 75x75 mm. The Element Deuterium is represented as a separate tube filled with the corresponding gas:
D - Deuterium

100% mercury and lead free!
Only purest gases are used!
Please note: The power supply is available here!

The tubes work with a 2 - 5kV power supply / 35-40kHz @ 20mA

 

Attention! The gases in these tubes are excited through the glass. No metal electrodes are used. This considerably increases the life time of the tubes, but the gases are relatively reactive and will react with the glass if used over a longer period.

 

Amount: 1 Stück /pc.
Purity : 99.8%
Packing: soft bag
70.00
- tax free

Availability: 4 in stock

All pictures are copyright protected and may not be used without our permission!

Request information
Amount:
 

 

smart-elements.com - Last software update from 17.11.2018 - All rights reserved
Idea, Design & Programming © by Juergen Bauer - All rights reserved