Helium: helium (he), chemical element, inert gas of group 18 (noble gases) of the periodic table the second lightest element (only hydrogen is lighter), helium is a colourless, odourless, and tasteless gas that becomes liquid at −2689 °c (−452 °f). Hydrogen is the only element that can exist without neutrons hydrogen is a colorless, odorless gas which exists, at standard temperature and pressure.
Periodic table of the elements the online resource for information on the subject, inculdes free downloads section and more. Hydrogen (h), with an atomic number of 1, is a colorless gas that wasn’t formally discovered as an element by henry cavendish until 1766, but it was accidentally found nearly one hundred years before by robert boyle. 380 hydrogen: it’s compounds and selected uses hydrogen is a very important element not only does it combine with carbon to give numerous organic. Hydrogen is a chemical element with symbol h and atomic number 1 with a standard atomic weight of 1008, hydrogen is the lightest element on the periodic tableits monatomic form (h) is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass.
Hydrogen definition is - a nonmetallic element that is the simplest and lightest of the elements. Hydrogen is a chemical element with the symbol h and atomic number 1 with just one proton and one electron, it is the most common element, making up 75% of the mass of the entire universe. Combining hydrogen and carbon produces a group of organic compounds called hydrocarbons carbon and hydrogen are the two elements always found in organic compounds.
It is the most abundant element in the universe the united states produces about 3 billion cubic feet of hydrogen per year common uses: hydrogenation of fats. A chemical element is a species of atoms having the same number of protons in their atomic nuclei the lightest chemical elements are hydrogen and helium. The element hydrogen - known isotopes isotopes of the element hydrogen [click for main data]most of the isotope data on this site has been obtained from the national nuclear data center. Hydrogen is a chemical element information about hydrogen, atomic number 1, mass number (atomic weight) 1, chemical symbol h.
Hydrogen peroxide (h2o2) is a very pale blue liquid which appears colourless in a dilute solution, slightly more viscous than waterit is a weak acid.
This webelements periodic table page contains uses for the element hydrogen. Photographs and descriptions of many samples of the element hydrogen in the periodic table. Comprehensive information for the element hydrogen - h is provided by this page including scores of properties, element names in many languages, most known nuclides and technical terms are linked to their definitions. Hydrogen is the first element on the periodic table this is a fact sheet for the element hydrogen, including its characteristics and physical properties, uses, sources and other data.Download