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en.wikipedia.org/wiki/Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1. With a standard atomic ..... Hydrogen is found in the neutral atomic state in the interstellar medium. The large amount of neutral hydrogen found in the damped Lyman-alpha ...

www.rsc.org/periodic-table/element/1/hydrogen

Element Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources ... Periodic Table > Hydrogen. Glossary ... Discovered by, Henry Cavendish.

en.wikibooks.org/wiki/Wikijunior:The_Elements/Hydrogen

Hydrogen is an atom that contains an electron and a single proton. It is found at the very upper left of the periodic chart. The symbol for Hydrogen is the letter H.

www.chemistryexplained.com/elements/C-K/Hydrogen.html

Hydrogen was first discovered in 1766 by English chemist and physicist Henry Cavendish (1731-1810). Cavendish was also the first person to prove that water  ...

education.jlab.org/itselemental/ele001.html

The simplest isotope, called protium, is just ordinary hydrogen. The second, a stable isotope called deuterium, was discovered in 1932. The third isotope, tritium, ...

www.ducksters.com/science/chemistry/hydrogen.php

Each water molecule (H2 O) contains two hydrogen atoms. Hydrogen is also found in a wide range of compounds throughout the earth including hydrocarbons, ...

www.livescience.com/28466-hydrogen.html

Jan 23, 2015 ... The most abundant element in the universe, hydrogen is also a ... which is just ordinary hydrogen; deuterium, a stable isotope discovered in ...

www.chem4kids.com/files/elements/001_speak.html

Hydrogen discovery, atomic structure, and location information. ... Let's start our tour of the periodic table with hydrogen (H). ... Where is Hydrogen Found?

www.reference.com/science/hydrogen-found-nature-1c6d5005cccee65d

As its name implies, hydrogen was first observed in water. Water consists of one oxygen atom bonded with two atoms of hydrogen. The abundance of water on ...