Periodic Table Element Comparison: Compare Elements - Helium vs Barium

Compare Helium and Barium

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

Name	Helium	Barium
Atomic Number	2	56
Atomic Symbol	He	Ba
Atomic Weight	4.002602	137.327
Phase at STP	Gas	Solid
Color	Colorless	Silver
Metallic Classification	Noble Gas	Alkaline Earth Metal
Group in Periodic Table	group 18	group 2
Group Name	helium family or neon family	beryllium family
Period in Periodic Table	period 1	period 6
Block in Periodic Table	p -block	s -block
Electronic Configuration	1s2	[Xe] 6s2
Electronic Shell Structure (Electrons per shell)	2	2, 8, 18, 18, 8, 2
Melting Point	0 K	1000 K
Boiling Point	4.22 K	2143 K
CAS Number	CAS7440-59-7	CAS7440-39-3
Neighborhood Elements	Neighborhood Elements of Helium	Neighborhood Elements of Barium

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 Barium was discovered by W. Scheele in year 1772 in United Kingdom. Barium derived its name from the Greek barys, meaning 'heavy'.
Discovery	P. Janssen and N. Lockyer (1868)	W. Scheele (1772)
Isolated	W. Ramsay,T. Cleve, and N. Langlet (1895)	H. Davy (1808)

Abundance in Universe	230000000 / 72000000	10 / 0.09
Abundance in Sun	230000000 / 74000000	10 / 0.1
Abundance in Meteorites	- / -	2800 / 410
Abundance in Earth's Crust	5.5 / 30	340000 / 51000
Abundance in Oceans	0.0072 / 0.011	30 / 1.4
Abundance in Humans	- / -	300 / 14

Atomic Volume	22.4136 cm3/mol	38.16 cm3/mol
Atomic Radius	31 pm	253 pm
Covalent Radius	32 pm	198 pm
Van der Waals Radius	140 pm	268 pm
Atomic Spectrum
Lattice Constant	424.2, 424.2, 424.2 pm	502.8, 502.8, 502.8 pm
Lattice Angle	π/2, π/2, π/2	π/2, π/2, π/2
Space Group Name	Fm_ 3m	Im_ 3m
Space Group Number	225	229
Crystal Structure	Face Centered Cubic	Body Centered Cubic

Atomic Number	2	56
Number of Electrons (with no charge)	2	56
Number of Protons	2	56
Mass Number	4.002602	137.327
Number of Neutrons	2	81
Shell structure (Electrons per energy level)	2	2, 8, 18, 18, 8, 2
Electron Configuration	1s2	[Xe] 6s2
Valence Electrons	1s2	6s2
Oxidation State	-	2
Atomic Term Symbol (Quantum Numbers)	1S0	1S0
Shell structure

Known Isotopes	3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He	114Ba, 115Ba, 116Ba, 117Ba, 118Ba, 119Ba, 120Ba, 121Ba, 122Ba, 123Ba, 124Ba, 125Ba, 126Ba, 127Ba, 128Ba, 129Ba, 130Ba, 131Ba, 132Ba, 133Ba, 134Ba, 135Ba, 136Ba, 137Ba, 138Ba, 139Ba, 140Ba, 141Ba, 142Ba, 143Ba, 144Ba, 145Ba, 146Ba, 147Ba, 148Ba, 149Ba, 150Ba, 151Ba, 152Ba, 153Ba
Stable Isotopes	Naturally occurring stable isotopes: 3He, 4He	Naturally occurring stable isotopes: 130Ba, 132Ba, 134Ba, 135Ba, 136Ba, 137Ba, 138Ba
Neutron Cross Section	0.007	1.3
Neutron Mass Absorption	0.00001	0.00027

Valence or Valency	0	2
Electronegativity	-	0.89 Pauling Scale
Electron Affinity	0 kJ/mol	13.95 kJ/mol
Ionization Energies	1st: 2372.3 kJ/mol 2nd: 5250.5 kJ/mol	1st: 502.9 kJ/mol 2nd: 965.2 kJ/mol 3rd: 3600 kJ/mol

Density	0.0001785 g/cm3	3.51 g/cm3
Molar Volume	22.4136 cm3/mol	38.16 cm3/mol
Elastic Properties
Young Modulus	-	13
Shear Modulus	-	4.9 GPa
Bulk Modulus	-	9.6 GPa
Poisson Ratio	-	-
Hardness - Tests to Measure of Hardness of Element
Mohs Hardness	-	1.25 MPa
Vickers Hardness	-	-
Brinell Hardness	-	-
Electrical Properties
Electrical Conductivity	-	2900000 S/m
Resistivity	-	3.5e-7 m Ω
Superconducting Point	-	-
Heat and Conduction Properties
Thermal Conductivity	0.1513 W/(m K)	18 W/(m K)
Thermal Expansion	-	0.0000206 /K
Magnetic Properties
Magnetic Type	Diamagnetic	Paramagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	-5.9e-9 m3/kg	1.13e-8 m3/kg
Molar Magnetic Susceptibility	-2.36e-11 m3/mol	1.552e-9 m3/mol
Volume Magnetic Susceptibility	-1.05e-9	0.00003966
Optical Properties
Refractive Index	1.000035	-
Acoustic Properties
Speed of Sound	970 m/s	1620 m/s

CAS Number	CAS7440-59-7	CAS7440-39-3
RTECS Number	RTECSMH6520000	RTECSCQ8370000
DOT Hazard Class	2.2	4.3
DOT Numbers	1963	1400
EU Number	-	-
NFPA Fire Rating	0	1
NFPA Hazards	-	Water Reactive
NFPA Health Rating	1	2
NFPA Reactivity Rating	0	2
AutoIgnition Point	-	-
Flashpoint	-	-

Periodic Table Element Comparison: Compare Elements - Helium vs Barium

Compare Helium and Barium

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 Barium with all Group 2 elements

Compare Barium with all Period 6 elements

Compare Barium with all Alkaline Earth Metal elements