mustymod - Eclair for Samsung Galaxy
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Hydrogen...

2 posters

Go down

Hydrogen... Empty Hydrogen...

Post  taixyz1992 Sun Nov 14, 2010 11:19 am

Hydrogen (play /ˈhaɪdrɵdʒɪn/ HYE-dro-jin)[4] is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of 1.00794 u (1.007825 u for Hydrogen-1), hydrogen is the lightest and most abundant chemical element, constituting roughly 75 % of the Universe's elemental mass.[5] Stars in the main sequence are mainly composed of hydrogen in its plasma state. Naturally occurring elemental hydrogen is relatively rare on Earth.

The most common isotope of hydrogen is protium (name rarely used, symbol 1H) with a single proton and no neutrons. In ionic compounds it can take a negative charge (an anion known as a hydride and written as H−), or as a positively charged species H+. The latter cation is written as though composed of a bare proton, but in reality, hydrogen cations in ionic compounds always occur as more complex species. Hydrogen forms compounds with most elements and is present in water and most organic compounds. It plays a particularly important role in acid-base chemistry with many reactions exchanging protons between soluble molecules. As the simplest atom known, the hydrogen atom has been of theoretical use. For example, as the only neutral atom with an analytic solution to the Schrödinger equation, the study of the energetics and bonding of the hydrogen atom played a key role in the development of quantum mechanics.


business opportunity
Technischer übersetzer Französisch

taixyz1992

Posts : 12
Join date : 2010-10-17

Back to top Go down

Hydrogen... Empty Re: Hydrogen...

Post  heroisthai12 Thu Dec 16, 2010 6:17 pm

In ionic compounds it can take a negative charge (an anion known as a hydride and written as H−), or as a positively charged species H+









___________________
owner operator jobs in georgia
petzlife

heroisthai12

Posts : 199
Join date : 2010-11-21

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum