Hydrogen
H
The atomic number is 1 and the mass number is 1.008. It belongs to period 1 and group 1. It is located in the hydrogen group. It is a a noble gas and is a non metal
Ballons
Hydrogen is the lightest element on the periodic table therefore it is used to lift up hot air ballons
Electric hydrogen fuel cell generator
In the fuel cell generator converts positively charged hydrogen ions into chemical energy
Atomic hydrogen welding
is an arc welding process that uses an arc between two metal tungsten electrodes in a shielding atmosphere of hydrogen