Hydrogen is the first element of the periodic table. It has only 1 electron and 1 proton. Hydrogen in perhaps one of the most common elements found on earth. It can be either a gas or liquid, and is therefore classified as both a metal, and non-metal. So Hydrogen does not belong to any one family of the Periodic Table of Elements.

external image HydrogenAtom.GIF

external image hydrogen.jpg

General Information:

  • Atomic Symbol: H
  • Atomic Number: 1
  • Atomic Mass: 1
  • # of Protons: 1
  • # of Nuetrons: 0
  • # of Electrons: 1
  • Melting Point: -249.14 degrees Celsius
  • Boiling Point: -252.87 degrees Celsius
  • Normal Phase: Gas
  • Cost per 1 Kilogram (Kg): $100

Facts and Stuff:

  • Origin of Name: The name hydrogen comes from the greek words: Hudor (meaning water) and Gennan (meaning generate)
  • Discovered by: Henry Cavendish in 1766
  • Common Uses: Hydrogen (liquid or gas) is used in welding , methonal production, filling baloons, rocket fuel, producing hydrochloric acid and countless other things.
  1. 75% of the universe's elemental mass is hydrogen
  2. Uncombined Hydrogen gas is so light it can actually escape the atmosphere (into outer space!!)
  3. Hydrogen gas is extremely flammable
  4. Hydrogen hugely contributed to the explosion of the Hindenburg
  5. Hydrogen is also found in stars and planets

external image Hindenburg.gif