Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Cesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Ununnilium Unununium Ununbium Ununquadium Unuhexium Ununoctium Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Chemistry : Periodic Table : Helium - Model Science : Model ChemLab - A Virtual ChemLab
2
  He  
4.002602
Helium


Free Virtual ChemLab
Model ChemLab - A Virtual ChemLab
Free Trial Software Available

Name: Helium
Symbol: He
Atomic Number: 2
AtomicWeight: 4.002602
Family: noble gases
CAS RN: 7440-59-7
Description: An unreactive, colorless, and odourless gas
State (25 ° C): Gas
Oxidation states: 0
Valence Electrons: 1s2

Spanish/Español
French/Français
new2.gif (111 bytes)Periodic Table Quiz



Click on element for details


Return to Periodic Table Page

Return to Chemistry Education Page

Virtual ChemLab Software


Home | Downloads | Products | Ordering| Support | Updates| Contact Us | Awards