Hi I'm Hydrogen. I am the first element on the periodic table. My name can be said in other languages such as Idrogeno, Waterstof, and Hydrogène. I got my name from the greek word "hydro" and "genes" meaning "water" and "generator."
Neutrons and Protons: 1 proton and 1 neutron
Naturally occurring isotopes and Natural abundance:
Isotope | Atomic mass (ma/u) | Natural abundance (atom %) |
|
|
1H | 1.007825032 1(4) | 99.9885 (70) |
|
|
2H | 2.014101778 0(4) | 0.0115 (70) |
|
|
Half lives:
Isotope | Mass | Half-life |
|
|
|
3H | 3.0160492675(11) | 12.33 y |
|
|
|
Average atomic mass: 1.00794
Electrons: 1
Shells of electrons: 1
Atomic radius: 2.5 x 10^-11 meters
Properties in pure element form:
- Melting Point
- Boiling Point
- Liquid Range
- Critical Temperature
- Superconduction Temperature
Abundance In my body: 100000000
Abundance In Earth's crust and Universe: 750000000
Compounds I Form:
- Hydrogen chloride: HCl
- Hydrogen bromide: HBr
- Hydrogen iodide: HI
- Water: H2O
My Story:
I was discovered by Henry Cavendish in 1766 in London. "Cavendish described accurately hydrogen's properties but thought erroneously that the gas originated from the metal rather than from
the acid. Hydrogen was named by Lavoisier."
My Jobs:
- filling balloons
- rocket fuel
????:
I make up about 90% of the Universe..
My Reference:
http://www.webelements.com/hydrogen/history.html