Element Blog Post

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