|
|
| General
|
| Name, Symbol, Number
| Barium, Ba, 56
|
| Series | alkaline earth metals
|
| Group, Period, Block
| 2(IIA), 6A period 6 element is one of the chemical elements in the sixth row (or period of the periodic table of the elements, including the Lanthanides. These are: Chemical elements in the sixth period Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 #Name 55 C, sAn atomic orbital is the mode of behavior of an electron in an atom (see first Electron orbital). A given orbital is identified by unique values of three quantum numbers: , , and. The various types of orbitals An orbital is uniquely identified by the valu
|
| DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness
| 3510 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 1.25
|
| AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of
| silvery white
|
| Atomic Properties
|
| Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot | 137.327 amu
|
| Atomic radius (Calc.) | 215 pm (253 pm)
|
| Covalent radius | 198 pm
|
| van der Waals radius | no information
|
| Electron configuration
| [ Xe]6s2
|
| e- 's per energy level
| 2, 8, 18, 18, 8, 2
|
| Oxidation states ( Oxide)
| 2 (strong base)
|
| Crystal structure | Cubic body centered
|
| Physical Properties
|
| State of matter | solid ( paramagnetic)
|
| Melting point
| 1000 K (1341 ° F)
|
| Boiling point | 2143 K (3398 °F)
|
| Molar volume
| 38.16 ×10-6 m3/mol
|
| Heat of vaporization | 142 kJ/mol
|
| Heat of fusion | 7.75 kJ/mol
|
| Vapor pressure | 98 Pa at 371 K
|
| Speed of sound | 1620 m/s
|
| Miscellaneous
|
| Electronegativity | 0.89( Pauling scale)
|
| Specific heat capacity
| 204 J/(kg*K)
|
| Electrical conductivity | 3 106/m ohm
|
| Thermal conductivity
| 18.4 W/(m*K)
|
| 1st ionization potential
| 502.9 kJ/mol
|
| 2nd ionization potential | 965.2 kJ/mol
|
| 3rd ionization potential | 3600 kJ/mol
|
| Most Stable Isotopes
|
| iso
| NA
| half-life
| DM
| DE M eV
| DP
|
| 130Ba | 0.106%
| Ba is stable with 74 neutrons
|
| 132Ba | 0.101%
| Ba is stable with 76 neutrons
|
| 133Ba | {syn.}
| 10.51 y
| epsilon | 0.517
| 133Cs
|
| 134Ba | 2.417%
| Ba is stable with 78 neutrons
|
| 135Ba | 6.592%
| Ba is stable with 79 neutrons
|
| 136Ba | 7.854%
| Ba is stable with 80 neutrons
|
| 137Ba | 11.23%
| Ba is stable with 81 neutrons
|
| 138Ba | 71.7%
| Ba is stable with 82 neutrons
|
|
| SI units & STP are used except where noted.
|
