Periodic Table Element Comparison: Compare Elements - Magnesium vs Hydrogen

Compare Magnesium and Hydrogen

Compare Magnesium and Hydrogen on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Magnesium vs Hydrogen with most reliable information about their properties, attributes, facts, uses etc. You can compare Mg vs H on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Name	Magnesium	Hydrogen
Atomic Number	12	1
Atomic Symbol	Mg	H
Atomic Weight	24.305	1.00794
Phase at STP	Solid	Gas
Color	Silver	Colorless
Metallic Classification	Alkaline Earth Metal	Other Nonmetal
Group in Periodic Table	group 2	group 1
Group Name	beryllium family	lithium family
Period in Periodic Table	period 3	period 1
Block in Periodic Table	s -block	s -block
Electronic Configuration	[Ne] 3s2	1s1
Electronic Shell Structure (Electrons per shell)	2, 8, 2	1
Melting Point	923 K	14.01 K
Boiling Point	1363 K	20.28 K
CAS Number	CAS7439-95-4	CAS1333-74-0
Neighborhood Elements	Neighborhood Elements of Magnesium	Neighborhood Elements of Hydrogen

History	The element Magnesium was discovered by J. Black in year 1755 in United Kingdom. Magnesium derived its name from Magnesia, a district of Eastern Thessaly in Greece.	The element Hydrogen was discovered by H. Cavendish in year 1766 in United Kingdom. Hydrogen derived its name from the Greek elements hydro- and -gen meaning 'water-forming'.
Discovery	J. Black (1755)	H. Cavendish (1766)
Isolated	H. Davy (1808)	Paracelsus (1500)

Abundance in Universe	600000 / 30000	750000000 / 930000000
Abundance in Sun	700000 / 30000	750000000 / 930000000
Abundance in Meteorites	120000000 / 100000000	24000000 / 170000000
Abundance in Earth's Crust	29000000 / 25000000	1500000 / 31000000
Abundance in Oceans	1326000 / 337000	107800000 / 662000000
Abundance in Humans	270000 / 70000	100000000 / 620000000

Atomic Volume	13.984 cm3/mol	22.4135 cm3/mol
Atomic Radius	145 pm	53 pm
Covalent Radius	130 pm	37 pm
Van der Waals Radius	173 pm	120 pm
Atomic Spectrum
Lattice Constant	320.94, 320.94, 521.08 pm	470, 470, 340 pm
Lattice Angle	π/2, π/2, 2 π/3	π/2, π/2, 2 π/3
Space Group Name	P63/mmc	P63/mmc
Space Group Number	194	194
Crystal Structure	Simple Hexagonal	Simple Hexagonal

Atomic Number	12	1
Number of Electrons (with no charge)	12	1
Number of Protons	12	1
Mass Number	24.305	1.00794
Number of Neutrons	12	0
Shell structure (Electrons per energy level)	2, 8, 2	1
Electron Configuration	[Ne] 3s2	1s1
Valence Electrons	3s2	1s1
Oxidation State	2	-1, 1
Atomic Term Symbol (Quantum Numbers)	1S0	2S1/2
Shell structure

Known Isotopes	19Mg, 20Mg, 21Mg, 22Mg, 23Mg, 24Mg, 25Mg, 26Mg, 27Mg, 28Mg, 29Mg, 30Mg, 31Mg, 32Mg, 33Mg, 34Mg, 35Mg, 36Mg, 37Mg, 38Mg, 39Mg, 40Mg	1H, 2H, 3H, 4H, 5H, 6H, 7H
Stable Isotopes	Naturally occurring stable isotopes: 24Mg, 25Mg, 26Mg	Naturally occurring stable isotopes: 1H, 2H
Neutron Cross Section	0.063	0.332
Neutron Mass Absorption	0.0001	0.011

Valence or Valency	2	1
Electronegativity	1.31 Pauling Scale	2.2 Pauling Scale
Electron Affinity	0 kJ/mol	72.8 kJ/mol
Ionization Energies	1st: 737.7 kJ/mol 2nd: 1450.7 kJ/mol 3rd: 7732.7 kJ/mol 4th: 10542.5 kJ/mol 5th: 13630 kJ/mol 6th: 18020 kJ/mol 7th: 21711 kJ/mol 8th: 25661 kJ/mol 9th: 31653 kJ/mol 10th: 35458 kJ/mol 11th: 169988 kJ/mol 12th: 189368 kJ/mol	1st: 1312 kJ/mol

Density	1.738 g/cm3	0.0000899 g/cm3
Molar Volume	13.984 cm3/mol	22.4135 cm3/mol
Elastic Properties
Young Modulus	45	-
Shear Modulus	17 GPa	-
Bulk Modulus	45 GPa	-
Poisson Ratio	0.29	-
Hardness - Tests to Measure of Hardness of Element
Mohs Hardness	2.5 MPa	-
Vickers Hardness	-	-
Brinell Hardness	260 MPa	-
Electrical Properties
Electrical Conductivity	23000000 S/m	-
Resistivity	4.4e-8 m Ω	-
Superconducting Point	-	-
Heat and Conduction Properties
Thermal Conductivity	160 W/(m K)	0.1805 W/(m K)
Thermal Expansion	0.0000082 /K	-
Magnetic Properties
Magnetic Type	Paramagnetic	Diamagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	6.9e-9 m3/kg	-2.48e-8 m3/kg
Molar Magnetic Susceptibility	1.68e-10 m3/mol	-4.999e-11 m3/mol
Volume Magnetic Susceptibility	0.000012	-2.23e-9
Optical Properties
Refractive Index	-	1.000132
Acoustic Properties
Speed of Sound	4602 m/s	1270 m/s

CAS Number	CAS7439-95-4	CAS1333-74-0
RTECS Number	-	RTECSMW8900000
DOT Hazard Class	4.1	2.1
DOT Numbers	2950	1966
EU Number	-	-
NFPA Fire Rating	1	4
NFPA Hazards	-	-
NFPA Health Rating	0	3
NFPA Reactivity Rating	1	0
AutoIgnition Point	472 °C	535.5 °C
Flashpoint	500 °C	-18 °C

Periodic Table Element Comparison: Compare Elements - Magnesium vs Hydrogen

Compare Magnesium and Hydrogen

Facts

History

Presence: Abundance in Nature and Around Us

Crystal Structure and Atomic Structure

Atomic and Orbital Properties

Isotopes and Nuclear Properties

Chemical Properties: Ionization Energies and electron affinity

Physical Properties

Elastic Properties

Hardness - Tests to Measure of Hardness of Element

Electrical Properties

Heat and Conduction Properties

Magnetic Properties

Optical Properties

Acoustic Properties

Thermal Properties - Enthalpies and thermodynamics

Enthalpies

Regulatory and Health - Health and Safety Parameters and Guidelines

Compare With Other Elements

Compare Magnesium with all Group 2 elements

Compare Magnesium with all Period 3 elements

Compare Magnesium with all Alkaline Earth Metal elements

Compare Hydrogen with all Group 1 elements

Compare Hydrogen with all Period 1 elements

Compare Hydrogen with all Other Nonmetal elements