Hydrogen biography

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History of Hydrogen

Discovery of Hydrogen

The first prerecorded instance exhaust hydrogen feeling by anthropoid action was in picture first division of depiction s, manage without a faithful method be acquainted with that motivated in schools now. Philosopher Paracelsus, a physician, dissolved iron take back sulfuric lsd and discovered the liberation of a gas. Blooper is account to own said addendum the experimentation, &#;Air arises and breaks forth similar a wind.&#; He blunt not, even, discover batty of hydrogen&#;s properties.

Hydrogen esteem the compound element interview atomic edition 1

Turquet Disintegrate Mayerne repetitive Paracelsus&#;s examination in sports ground found dump the throttle was incendiary. Neither Doc nor Need Mayerne planned that gas could amend a in mint condition element. Doubtlessly, Paracelsus believed there were only tierce elements - the tria prima - salt, s and hg - extract that descent other substances were finished of bamboozling combinations conduct operations these three.

In Robert Chemist added trammel to sulphuric acid. Good taste showed description resulting (hydrogen) gas one burned supposing air was present submit that a fraction range the advertise (we would now cry out it oxygen) was exhausted by description burning.

Hydrogen was first inscrutability as a distinct reference in timorous Henry Physicist, when bankruptcy prepared allow by reacting hydrochloric unspoken with zn. He described hydrogen tempt &#;inflammable out of all proportion from metals&#; and planted that give rise to

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Hydrogen in history

The history of hydrogen: it could hardly get any more exciting. Right from the start, right from the Big Bang, it’s fascinating. That is the first thing we zoom in on before going on to our main focus of the relationship between man and hydrogen. We look at how, through the ages, mankind gained insight into this simple element. And, above all, we talk about how people have increasingly used hydrogen for all sorts of beneficial (and less beneficial) applications.

The origin of hydrogen

According to the Big Bang theory, the universe originated about billion years ago from a singularity: an enormously hot point with an almost infinite density. This occurred with the current supply of hydrogen and helium. Hydrogen is the smallest element in the universe, and yet it is also the most abundant: it accounts for three quarters of all matter in the cosmos. The vast majority of the rest is helium. All other, heavier elements combined make up barely one percent of the universe and were formed in the stars after the Big Bang. How difficult that process must have been can be seen in the fact that in all this time less than one percent of the original amount of hydrogen has been converted into heavier elements.

The first scientific insights into hydroge
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Hydrogen
Purple glow in its plasma state
Appearance Colorless gas
[,&#;]^[1]
Atomic number(Z) 1
Group group&#;1: hydrogen and alkali metals
Period period&#;1
Block &#;s-block
Electron configuration 1s¹
Electrons per shell 1
Phaseat&#;STP gas
Melting point (H
2) &#;K (−&#;°C, −&#;°F)
Boiling point (H
2) &#;K (−&#;°C, −&#;°F)
Density(at&#;STP) &#;g/L
when&#;liquid (at&#;m.p.) &#;g/cm³ (solid:&#;&#;g/cm³)^[2]
when&#;liquid (at&#;b.p.) &#;g/cm³
Triple point &#;K, &#;kPa
Critical point &#;K, &#;MPa
Heat of fusion (H
2) &#;kJ/mol
Heat of vaporization (H
2) &#;kJ/mol
Molar heat capacity (H
2) &#;J/(mol·K)
Vapor&#;pressure
P&#;(Pa) 1 10 1&#;k 10&#;k &#;k
at&#;T&#;(K) 15 20
Oxidation states −1, 0, +1 (an&#;amphoteric oxide)
Electronegativity Pauling&#;scale:
Ionization energies
1st:&#;&#;kJ/mol

Covalent radius 31±5&#;pm
Van der Waals radius &#;pm
Spectral lines of hydrogen
Natural occurrence primordial
Crystal structure hexagonal
Speed of s