Periodic Table Element Comparison: Compare Elements - Barium vs Helium

Compare Barium and Helium

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

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

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

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

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

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

Known Isotopes	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	3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He
Stable Isotopes	Naturally occurring stable isotopes: 130Ba, 132Ba, 134Ba, 135Ba, 136Ba, 137Ba, 138Ba	Naturally occurring stable isotopes: 3He, 4He
Neutron Cross Section	1.3	0.007
Neutron Mass Absorption	0.00027	0.00001

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

Density	3.51 g/cm3	0.0001785 g/cm3
Molar Volume	38.16 cm3/mol	22.4136 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	18 W/(m K)	0.1513 W/(m K)
Thermal Expansion	0.0000206 /K	-
Magnetic Properties
Magnetic Type	Paramagnetic	Diamagnetic
Curie Point	-	-
Mass Magnetic Susceptibility	1.13e-8 m3/kg	-5.9e-9 m3/kg
Molar Magnetic Susceptibility	1.552e-9 m3/mol	-2.36e-11 m3/mol
Volume Magnetic Susceptibility	0.00003966	-1.05e-9
Optical Properties
Refractive Index	-	1.000035
Acoustic Properties
Speed of Sound	1620 m/s	970 m/s

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

Periodic Table Element Comparison: Compare Elements - Barium vs Helium

Compare Barium 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 Barium with all Group 2 elements

Compare Barium with all Period 6 elements

Compare Barium with all Alkaline Earth Metal elements

Compare Helium with all Group 18 elements

Compare Helium with all Period 1 elements

Compare Helium with all Noble Gas elements