Harry was Born with a atomic mass of 1.008 and an atomic number of 1.0
He belongs to no particualr family but can be found mixing with most elements. Here is a picture of Harry.
Harry has a cold personlaity as he melts at -259.14 oC, and boils at -252.87 oC,. Thats so cold that at room temperature he extiss as a gas. However mix him with some elements and the result can be explosive!
http://www.youtube.com/watch?v=fesgl5Cs5FY
Harry was first considered an element in in 1766 by Henry Cavendish, where he was fisrt isolated. ANother chemist Lavoisier named him rom the Greek 'hydro' meaning water and 'genes' meaning forming - in fact Harry gets along really well with oxygen and forms water.
Here are two pictures of Cavendish and Lavoisier
Compounds
Because Harry gets along so well with everyone he mixes with halogens to form halides. oxygen to domr oxides, sulfur for Hydrogen sulfide ( smelly this one) and carbon to maje hydrocarbons
He has a caeer in motor cars, food as he helps make margarine. ammonia (NH3) to use in making fertilizer.rocket fuel
Here is Hydrogen being used in a car
http://www.youtube.com/watch?v=RcsRk_gtO2U