Barium
aspect 56 of routine table is Barium with atomic number 56, atomic weight 137.327. Barium, prize Ba, has a Body centered Cubic structure and Silver color. Barium is a alkaline earth metal element. Trivial surname of Barium is alkaline planet metals*. Know everything around Barium Facts, physical Properties, chemistry Properties, electronic configuration, Atomic and Crystal Structure.
Barium is a chemical element with prize Ba and also atomic number 56. The is the fifth element in group 2, a soft silvery metallic alkaline earth metal. Since of its high chemical reactivity barium is never uncovered in nature together a totally free element.
You are watching: Number of valence electrons in barium
Barium Facts
Read key information and also facts about element Barium
| surname | Barium |
| atomic Number | 56 |
| atom Symbol | Ba |
| Atomic weight | 137.327 |
| step | Solid |
| color | Silver |
| Classification | alkaline earth metal |
| team in regular Table | 2 |
| Group Name | beryllium family members |
| duration in regular Table | 6 |
| Block in periodic Table | s-block |
| Electronic Configuration | |
| Melting suggest | 727 °C |
| Boiling point | 1870 °C |
| Electronic covering Structure | <2, 8, 18, 18, 8, 2> |
| CAS Number | CAS7440-39-3 |
neighborhood
37
Rb
38
Sr
39
Y
55
Cs
56
Ba
87
Fr
88
Ra
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
| 1 | 1 H 2 He | |||||||||||||||||
| 2 | 3 Li 4 Be 5 B 6 C 7 N 8 O 9 F 10 Ne | |||||||||||||||||
| 3 | 11 Na 12 Mg 13 Al 14 Si 15 P 16 S 17 Cl 18 Ar | |||||||||||||||||
| 4 | 19 K 20 Ca 21 Sc 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr | |||||||||||||||||
| 5 | 37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 I 54 Xe | |||||||||||||||||
| 6 | 55 Cs 56 Ba 72 Hf 73 Ta 74 W 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 Tl 82 Pb 83 Bi 84 Po 85 At 86 Rn | |||||||||||||||||
| 7 | 87 Fr 88 Ra 104 Rf 105 Db 106 Sg 107 Bh 108 Hs 109 Mt 110 Ds 111 Rg 112 Cn 113 Nh 114 Fl 115 Mc 116 Lv 117 Ts 118 Og | |||||||||||||||||
| Lanthanides | 57 La 58 Ce 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 Tb 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu | |||||||||||||||||
| Actinide | 89 Ac 90 Th 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md 102 No 103 Lr |
discover our interactive regular table
How to situate Barium on periodic Table
Periodic table is i ordered it by atom number, variety of protons in the nucleus which is same as number of electrons. The atom number rises from left come right. Regular table start at top left ( atom number 1) and ends at bottom right (atomic number 118). As such you can straight look because that atomic number 56 to uncover Barium on regular table.
Another way to read routine table and locate an element is through using group number (column) and period number (row). To situate Barium on regular table look because that cross ar of group 2 and duration 6 in the contemporary periodic table.
check out Interactive periodic Table come Understand and Learn Cool trends
Table the Contents
History
Abundance
Physical Properties
Thermal Properties
Crystal Structure
Atomic & orbit Properties
Chemical Properties
Isotopes
Health and Safety Parameters and also Guidelines
Databases
Compare Barium with various other elements
Barium History
The element Barium was uncovered by Carl Wilhelm Scheele in year 1808 in uk . Barium acquired its name from the Greek barys, definition "heavy"
Barium Presence: abundance in Nature and also Around Us
The table below shows the variety of Barium in Universe, Sun, Meteorites, Earth"s Crust, Oceans and also Human Body.
| variety in universe | 1×10-6% |
| abundance in sunlight | 1×10-6% |
| variety in Meteorites | 2.7e-06 |
| Abundance in Earth"s late | 0.00034 |
| abundance in oceans | 3×10-6% |
| variety in human beings | 3e-07 |
Crystal structure of Barium
The hard state structure of Barium is Body focused Cubic.
The decision structure have the right to be defined in regards to its unit Cell. The unit cells repeats chin in three dimensional room to kind the structure.
Unit cell Parameters
The unit cell is represented in regards to its lattice parameters, which are the lengths of the cabinet edges Lattice Constants (a, b and c)
| 502.8 | 502.8 | 502.8 pm |
and the angles in between them Lattice angle (alpha, beta and gamma).
| π/2 | π/2 | π/2 |
The positions of the atoms inside the unit cell are explained by the collection of atom positions ( xi, yi, zi) measured indigenous a reference lattice point.
The symmetry properties of the crystal are explained by the concept of an are groups. All possible symmetric kinds of particles in three-dimensional an are are explained by the 230 room groups (219 distinctive types, or 230 if chiral duplicates are taken into consideration distinct.
| room Group surname | Im_ 3m |  |
| an are Group Number | 229 | |
| Crystal framework | Body focused Cubic |
Barium Atomic and Orbital Properties
Barium atoms have 56 electrons and also the digital shell structure is <2, 8, 18, 18, 8, 2> v Atomic ax Symbol (Quantum Numbers) 1S0.
| atomic Number | 56 |
| Number of electron (with no charge) | 56 |
| Number of Protons | 56 |
| Mass Number | 137 |
| Number that Neutrons | 81 |
| Shell structure (Electrons per energy level) | <2, 8, 18, 18, 8, 2> |
| Electron configuration | |
| Valence Electrons | 6s2 |
| Oxidation State | 1;2 |
| Atomic term Symbol (Quantum Numbers) | 1S0 |
Shell structure of Barium - electron per energy level
Ground State digital Configuration of Barium - neutral Barium atom
The soil state electronic configuration that Neutral Barium atom isSee more: How Many Kilograms In 20 Pounds, Convert 20 Pounds To Kilograms
Unabbreviated electronic configuration the neutral Barium
Complete ground state electronic configuration for the Barium atom, Unabbreviated digital configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2
Atomic framework of Barium
Barium atomic radius is 253 pm, when it"s covalent radius is 198 pm.
| atom Radius | 253 pm (2.53 Å) |
| Atomic Volume | 39.1245014245 cm3 |
| Covalent Radius | 198 afternoon (1.98 Å) |
| van der Waals Radius | N/A |
| spirit Cross ar | 1.3 σa/barns |
Atomic Spectrum the Barium
Barium chemistry Properties: Barium Ionization Energies and electron affinity
The electron affinity that Barium is 13.95 kJ/mol
| Valence | 2 |
| Electronegativity | 0.89 |
| ElectronAffinity | 13.95 kJ/mol |
Ionization energy of Barium
Refer come table below for Ionization energies that Barium
| 1 | 502.9 |
| 2 | 965.2 |
| 3 | 3.6×103 |
Barium physical Properties
Refer to listed below table because that Barium physics Properties
| density | 3.51 g/cm3 |
| Molar Volume | 39.1245014245 cm3 |
Elastic Properties
| Young Modulus | 13 GPa |
| Shear Modulus | 4.9 GPa |
| mass Modulus | 9.6 GPa |
| Poisson proportion | N/A |
Hardness that Barium - test to measure of Hardness of Element
| Mohs Hardness | 1.25 MPa |
| Vickers Hardness | N/A |
| Brinell Hardness | N/A |
Barium electric Properties
Barium is Conductor of electricity. Describe table listed below for the electrical properties the Barium
| electric Conductivity | 2.9×106 S/m |
| Resistivity | 3.5×10-7 m Ω |
| Superconducting point | N/A |
Barium Heat and Conduction Properties
| heat Conductivity | 18 W/(m K) |
| Thermal development | 0.0000206 K-1 |
Barium Magnetic Properties
| Magnetic form | Paramagnetic |
| Curie suggest | N/A |
| mass Magnetic Susceptibility | 1.13×10-8 |
| Molar Magnetic Susceptibility | 1.552×10-9 |
| Volume Magnetic Susceptibility | 3.966e-05 |
Optical nature of Barium
| Refractive index | N/A |
Acoustic properties of Barium
| rate of Sound | 1620 m/s |
Barium heat Properties - Enthalpies and thermodynamics
Refer to table below for thermal properties of Barium
| Melting allude | 1×103 K (727 °C) |
| Boiling point | 2143 K (1870 °C) |
| an essential Temperature | N/A |
| Superconducting point | N/A |
Enthalpies of Barium
| warmth of blend | 8 kJ/mol |
| warmth of Vaporization | 140 kJ/mol |
| warm of combustion | N/A |
Barium isotopes - atom Properties the Barium
Isotopes of rhodium. Naturally occurring Barium has 7 stable isotope - 130Ba, 132Ba, 134Ba, 135Ba, 136Ba, 137Ba, 138Ba.
| 114Ba | ||||
| 115Ba | ||||
| 116Ba | ||||
| 117Ba | ||||
| 118Ba | ||||
| 119Ba | ||||
| 120Ba | ||||
| 121Ba | ||||
| 122Ba | ||||
| 123Ba | ||||
| 124Ba | ||||
| 125Ba | ||||
| 126Ba | ||||
| 127Ba | ||||
| 128Ba | ||||
| 129Ba | ||||
| 130Ba | 0.106% | steady | N/A | |
| 131Ba | ||||
| 132Ba | 0.101% | secure | N/A | |
| 133Ba | ||||
| 134Ba | 2.417% | secure | N/A | |
| 135Ba | 6.592% | secure | N/A | |
| 136Ba | 7.854% | steady | N/A | |
| 137Ba | 11.232% | stable | N/A | |
| 138Ba | 71.698% | stable | N/A | |
| 139Ba | ||||
| 140Ba | ||||
| 141Ba | ||||
| 142Ba | ||||
| 143Ba | ||||
| 144Ba | ||||
| 145Ba | ||||
| 146Ba | ||||
| 147Ba | ||||
| 148Ba | ||||
| 149Ba | ||||
| 150Ba | ||||
| 151Ba | ||||
| 152Ba | ||||
| 153Ba |
Regulatory and Health - Health and also Safety Parameters and also Guidelines
| CAS Number | CAS7440-39-3 |
| RTECS Number | RTECSCQ8370000 |
| dot Hazard class | 4.3 |
| period Numbers | 1400 |
| EU Number | N/A |
| NFPA Fire Rating | 1 |
| NFPA dangers | Water Reactive |
| NFPA health and wellness Rating | 2 |
| NFPA Reactivity Rating | 2 |
| Autoignition allude | N/A |
| Flashpoint | N/A |
Database Search
perform of distinct identifiers to search the element in miscellaneous chemical registry databases
| CAS Number - chemical Abstracts business (CAS) | CAS7440-39-3 |
| CID Number | CID5355457 |
| Gmelin Number | N/A |
| NSC Number | N/A |
| RTECS Number | RTECSCQ8370000 |