Hydrogen (symbol H) is the main chemical element of the alkali metal group. It is the lightest and most abundant of all the elements. It is a colorless, odorless and tasteless gas, which easily combines with other elements.

Hydrogen is the lightest of the chemical elements, having an atomic weight of 1.00794 g/mol. It is very responsive and can combine with almost any other element. It has an electronic structure 2,

Hydrogen is highly flammable and can combine easily with other elements, forming various chemical compounds. Due to its high reactivity, it is very volatile and tends to evaporate. It is very light and is in a gaseous state at room temperature.

Hydrogen is the primary fuel used in rockets and space vehicles. It is also used to produce industrial products such as ammonia, petroleum products and chemicals. It is widely used in industry as a fuel for boilers and furnaces, and it is also used in hydrogen fuel engines. Additionally, it is used to generate electricity using fuel cells.

1.0082

-1
1

1s1

2.2

13.5984

Synthetic

Radioactive

Liquid

Gaseous

Electronic configuration diagram

Characteristics

Name	Hydrogen
Number	1
Atomic	1.0082
Symbol	H
Fusion	-259.1
Boiling	-252.9
Density	8.988E-5
Period	1
Group	1

Discovery	1766 Cavendish
Abundance	1400
Radius	0.79
Electronegativity	2.2
Ionization	13.5984
Number of isotopes	3
Electronic configuration	1s1
Oxidation states	-1,1
Electron by energy level	1

Minerals containing this element : 3139

Mineral	Hardness	Density
Abelsonite	2.00 / 2.50	1.45
Abernathyite	2.00 / 3.00	3.31
Abhurite	2.00 / 2.00	4.29
Acetamide	1.00 / 1.50	1.17
Acmonidesite
Actinolite	5.50 / 5.50	2.98
Acuminite	3.50 / 3.50	3.30
Adachiite
Adamite	3.50 / 3.50	4.30
Adamsite-(Y)	3.00 / 3.00
Adelite	5.00 / 5.00	3.73
Admontite	2.00 / 3.00	1.82
Adolfpateraite	2.00 / 2.00	4.24
Adranosite
Adranosite-(Fe)		2.20
Aerinite	3.00 / 3.00	2.48
Aeschynite-(Ce)	5.00 / 6.00	5.19
Aeschynite-(Nd)	5.00 / 6.00	4.60
Aeschynite-(Y)	5.00 / 6.00	4.85
Afghanite	5.50 / 6.00	2.55
Afmite
Afwillite	3.00 / 3.00	2.62
Agaite		6.99
Agardite-(Ce)	3.00 / 3.00	3.72
Agardite-(La)	3.00 / 4.00	3.72
Agardite-(Nd)	3.00 / 4.00	3.72
Agardite-(Y)	3.00 / 4.00	3.66
Agrinierite		5.62
Aheylite	5.00 / 6.00	2.85
Ahlfeldite	2.00 / 2.50	3.37
Ajoite		2.96
Akaganeite		3.00
Akatoreite	6.00 / 6.00	3.48
Akdalaite	7.00 / 7.00	3.68
Aklimaite
Akrochordite	3.50 / 3.50	3.19
Aksaite	2.50 / 2.50	1.99
Albertiniite		2.46
Albrechtschraufite	2.00 / 3.00	2.60
Alcaparrosaite	4.00 / 4.00	2.81
Aldermanite	2.00 / 2.00	2.00
Aldridgeite	3.00 / 3.00	3.33
Alexkhomyakovite
Alflarsenite	4.00 / 4.00	2.61
Alfredopetrovite	2.50 / 2.50	2.50
Alfredstelznerite
Aliettite	1.00 / 2.00
Allactite	4.50 / 4.50	3.00
Allanite-(Ce)	5.50 / 5.50	3.30
Allanite-(La)	6.00 / 6.00	3.93
Allanite-(Nd)
Allanite-(Y)	5.50 / 5.50	3.30
Allanpringite	3.00 / 3.00	2.54
Alleghanyite	6.00 / 5.00	4.00
Allophane	3.00 / 3.00	1.90
Alloriite	5.00 / 5.00	2.35
Alluaivite	5.00 / 6.00	2.76
Almeidaite
Alnaperbøeite-(Ce)
Alpersite	2.50 / 2.50
Alsakharovite-Zn	5.00 / 5.00	2.90
Althausite	3.50 / 3.50	2.97
Althupite	3.50 / 4.00	3.90
Alum-(K)	2.00 / 2.00	1.76
Alum-(Na)	3.00 / 3.00	1.67
Aluminite	1.00 / 1.00	1.66
Alumino-ferrobarroisite
Alumino-ferrohornblende
Alumino-ferrotschermakite
Alumino-ferrowinchite
Alumino-magnesiohornblende
Alumino-magnesiotaramite
Alumino-ottoliniite
Aluminobarroisite	5.00 / 6.00	2.94
Aluminoceladonite
Aluminocerite-(Ce)	5.00 / 5.00	4.68
Aluminocopiapite	2.50 / 3.00	2.00
Aluminocoquimbite		2.04
Aluminokatophorite	5.00 / 6.00
Aluminopyracmonite		2.14
Aluminotschermakite	5.00 / 6.00
Aluminowinchite
Alumohydrocalcite	2.50 / 2.50	2.23
Alumotungstite
Alumovesuvianite
Alunite	3.50 / 4.00	2.59
Alunogen	1.50 / 2.00	1.65
Alvanite	3.00 / 3.50	2.41
Alwilkinsite-(Y)	2.00 / 2.50	3.37
Amakinite	3.50 / 4.00	2.93
Amarantite	2.50 / 2.50	2.19
Amarillite	2.50 / 3.00	2.19
Amber	2.00 / 2.50	1.10
Amblygonite	5.50 / 6.00	2.98
Ambrinoite		3.31
Ameghinite	2.00 / 3.00	2.02
Amesite	2.50 / 3.00	2.77
Amicite	5.00 / 5.50	2.06
Aminoffite	5.50 / 5.50	2.94