Periodic Table Element Comparison: Compare Elements - Helium vs Neon

Compare Helium and Neon

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

Name	Helium	Neon
Atomic Number	2	10
Atomic Symbol	He	Ne
Atomic Weight	4.002602	20.1797
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 1	period 2
Block in Periodic Table	p -block	p -block
Electronic Configuration	1s2	[He] 2s2 2p6
Electronic Shell Structure (Electrons per shell)	2	2, 8
Melting Point	0 K	24.56 K
Boiling Point	4.22 K	27.07 K
CAS Number	CAS7440-59-7	CAS7440-01-9
Neighborhood Elements	Neighborhood Elements of Helium	Neighborhood Elements of Neon

History	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'.	The element Neon was discovered by W. Ramsay and W. Travers in year 1898 in United Kingdom. Neon derived its name from the Greek neos, meaning 'new'.
Discovery	P. Janssen and N. Lockyer (1868)	W. Ramsay and W. Travers (1898)
Isolated	W. Ramsay,T. Cleve, and N. Langlet (1895)	W. Ramsay and W. Travers (1898)

Abundance in Universe	230000000 / 72000000	1300000 / 80000
Abundance in Sun	230000000 / 74000000	1000000 / 70000
Abundance in Meteorites	- / -	- / -
Abundance in Earth's Crust	5.5 / 30	3.0 / 3
Abundance in Oceans	0.0072 / 0.011	0.12 / 0.037
Abundance in Humans	- / -	- / -

Atomic Volume	22.4136 cm3/mol	22.42 cm3/mol
Atomic Radius	31 pm	38 pm
Covalent Radius	32 pm	69 pm
Van der Waals Radius	140 pm	154 pm
Atomic Spectrum
Lattice Constant	424.2, 424.2, 424.2 pm	442.9, 442.9, 442.9 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	2	10
Number of Electrons (with no charge)	2	10
Number of Protons	2	10
Mass Number	4.002602	20.1797
Number of Neutrons	2	10
Shell structure (Electrons per energy level)	2	2, 8
Electron Configuration	1s2	[He] 2s2 2p6
Valence Electrons	1s2	2s2 2p6
Oxidation State	-	-
Atomic Term Symbol (Quantum Numbers)	1S0	1S0
Shell structure

Known Isotopes	3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He	16Ne, 17Ne, 18Ne, 19Ne, 20Ne, 21Ne, 22Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne
Stable Isotopes	Naturally occurring stable isotopes: 3He, 4He	Naturally occurring stable isotopes: 20Ne, 21Ne, 22Ne
Neutron Cross Section	0.007	0.04
Neutron Mass Absorption	0.00001	0.0006

Valence or Valency	0	0
Electronegativity	-	-
Electron Affinity	0 kJ/mol	0 kJ/mol
Ionization Energies	1st: 2372.3 kJ/mol 2nd: 5250.5 kJ/mol	1st: 2080.7 kJ/mol 2nd: 3952.3 kJ/mol 3rd: 6122 kJ/mol 4th: 9371 kJ/mol 5th: 12177 kJ/mol 6th: 15238 kJ/mol 7th: 19999 kJ/mol 8th: 23069.5 kJ/mol 9th: 115379.5 kJ/mol 10th: 131432 kJ/mol

Density	0.0001785 g/cm3	0.0009 g/cm3
Molar Volume	22.4136 cm3/mol	22.42 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	0.1513 W/(m K)	0.0491 W/(m K)
Thermal Expansion	-	-
Magnetic Properties
Magnetic Type	Diamagnetic	Diamagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	-5.9e-9 m3/kg	-4.1e-9 m3/kg
Molar Magnetic Susceptibility	-2.36e-11 m3/mol	-8.27e-11 m3/mol
Volume Magnetic Susceptibility	-1.05e-9	-3.69e-9
Optical Properties
Refractive Index	1.000035	1.000067
Acoustic Properties
Speed of Sound	970 m/s	936 m/s

CAS Number	CAS7440-59-7	CAS7440-01-9
RTECS Number	RTECSMH6520000	RTECSQP4450000
DOT Hazard Class	2.2	2.2
DOT Numbers	1963	1913
EU Number	-	-
NFPA Fire Rating	0	-
NFPA Hazards	-	-
NFPA Health Rating	1	-
NFPA Reactivity Rating	0	-
AutoIgnition Point	-	-
Flashpoint	-	-

Periodic Table Element Comparison: Compare Elements - Helium vs Neon

Compare Helium and Neon

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 Helium with all Group 18 elements

Compare Helium with all Period 1 elements

Compare Helium with all Noble Gas elements

Compare Neon with all Group 18 elements

Compare Neon with all Period 2 elements

Compare Neon with all Noble Gas elements