Periodic Table Element Comparison: Compare Elements - Xenon vs Helium

Compare Xenon and Helium

Compare Xenon and Helium 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 Xenon vs Helium with most reliable information about their properties, attributes, facts, uses etc. You can compare Xe vs He on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

Name	Xenon	Helium
Atomic Number	54	2
Atomic Symbol	Xe	He
Atomic Weight	131.293	4.002602
Phase at STP	Gas	Gas
Color	Colorless	Colorless
Metallic Classification	Noble Gas	Noble Gas
Group in Periodic Table	group 18	group 18
Group Name	helium family or neon family	helium family or neon family
Period in Periodic Table	period 5	period 1
Block in Periodic Table	p -block	p -block
Electronic Configuration	[Kr] 4d10 5s2 5p6	1s2
Electronic Shell Structure (Electrons per shell)	2, 8, 18, 18, 8	2
Melting Point	161.3 K	0 K
Boiling Point	165.1 K	4.22 K
CAS Number	CAS7440-63-3	CAS7440-59-7
Neighborhood Elements	Neighborhood Elements of Xenon	Neighborhood Elements of Helium

History	The element Xenon was discovered by W. Ramsay and W. Travers in year 1898 in United Kingdom. Xenon derived its name from the Greek xenos, meaning 'strange'.	The element Helium was discovered by P. Janssen and N. Lockyer in year 1868 in Sweden and United Kingdom. Helium derived its name from the Greek word helios, meaning 'sun'.
Discovery	W. Ramsay and W. Travers (1898)	P. Janssen and N. Lockyer (1868)
Isolated	W. Ramsay and W. Travers (1898)	W. Ramsay,T. Cleve, and N. Langlet (1895)

Abundance in Universe	10 / 0.09	230000000 / 72000000
Abundance in Sun	- / -	230000000 / 74000000
Abundance in Meteorites	- / -	- / -
Abundance in Earth's Crust	0.020 / 0.003	5.5 / 30
Abundance in Oceans	0.005 / 0.00024	0.0072 / 0.011
Abundance in Humans	- / -	- / -

Atomic Volume	22.4128 cm3/mol	22.4136 cm3/mol
Atomic Radius	108 pm	31 pm
Covalent Radius	130 pm	32 pm
Van der Waals Radius	216 pm	140 pm
Atomic Spectrum
Lattice Constant	620.23, 620.23, 620.23 pm	424.2, 424.2, 424.2 pm
Lattice Angle	π/2, π/2, π/2	π/2, π/2, π/2
Space Group Name	Fm_ 3m	Fm_ 3m
Space Group Number	225	225
Crystal Structure	Face Centered Cubic	Face Centered Cubic

Atomic Number	54	2
Number of Electrons (with no charge)	54	2
Number of Protons	54	2
Mass Number	131.293	4.002602
Number of Neutrons	77	2
Shell structure (Electrons per energy level)	2, 8, 18, 18, 8	2
Electron Configuration	[Kr] 4d10 5s2 5p6	1s2
Valence Electrons	5s2 5p6	1s2
Oxidation State	0	-
Atomic Term Symbol (Quantum Numbers)	1S0	1S0
Shell structure

Known Isotopes	110Xe, 111Xe, 112Xe, 113Xe, 114Xe, 115Xe, 116Xe, 117Xe, 118Xe, 119Xe, 120Xe, 121Xe, 122Xe, 123Xe, 124Xe, 125Xe, 126Xe, 127Xe, 128Xe, 129Xe, 130Xe, 131Xe, 132Xe, 133Xe, 134Xe, 135Xe, 136Xe, 137Xe, 138Xe, 139Xe, 140Xe, 141Xe, 142Xe, 143Xe, 144Xe, 145Xe, 146Xe, 147Xe	3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He
Stable Isotopes	Naturally occurring stable isotopes: 124Xe, 126Xe, 128Xe, 129Xe, 130Xe, 131Xe, 132Xe, 134Xe, 136Xe	Naturally occurring stable isotopes: 3He, 4He
Neutron Cross Section	25	0.007
Neutron Mass Absorption	0.0083	0.00001

Valence or Valency	6	0
Electronegativity	2.6 Pauling Scale	-
Electron Affinity	0 kJ/mol	0 kJ/mol
Ionization Energies	1st: 1170.4 kJ/mol 2nd: 2046.4 kJ/mol 3rd: 3099.4 kJ/mol	1st: 2372.3 kJ/mol 2nd: 5250.5 kJ/mol

Density	0.0059 g/cm3	0.0001785 g/cm3
Molar Volume	22.4128 cm3/mol	22.4136 cm3/mol
Elastic Properties
Young Modulus	-	-
Shear Modulus	-	-
Bulk Modulus	-	-
Poisson Ratio	-	-
Hardness - Tests to Measure of Hardness of Element
Mohs Hardness	-	-
Vickers Hardness	-	-
Brinell Hardness	-	-
Electrical Properties
Electrical Conductivity	-	-
Resistivity	-	-
Superconducting Point	-	-
Heat and Conduction Properties
Thermal Conductivity	0.00565 W/(m K)	0.1513 W/(m K)
Thermal Expansion	-	-
Magnetic Properties
Magnetic Type	Diamagnetic	Diamagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	-4.3e-9 m3/kg	-5.9e-9 m3/kg
Molar Magnetic Susceptibility	-5.65e-10 m3/mol	-2.36e-11 m3/mol
Volume Magnetic Susceptibility	-2.54e-8	-1.05e-9
Optical Properties
Refractive Index	1.000702	1.000035
Acoustic Properties
Speed of Sound	1090 m/s	970 m/s

CAS Number	CAS7440-63-3	CAS7440-59-7
RTECS Number	RTECSZE1280000	RTECSMH6520000
DOT Hazard Class	2.2	2.2
DOT Numbers	2591	1963
EU Number	EU231-172-7	-
NFPA Fire Rating	-	0
NFPA Hazards	-	-
NFPA Health Rating	-	1
NFPA Reactivity Rating	-	0
AutoIgnition Point	-	-
Flashpoint	-	-

Periodic Table Element Comparison: Compare Elements - Xenon vs Helium

Compare Xenon and Helium

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 Xenon with all Group 18 elements

Compare Xenon with all Period 5 elements

Compare Xenon with all Noble Gas elements

Compare Helium with all Group 18 elements

Compare Helium with all Period 1 elements

Compare Helium with all Noble Gas elements