Barium
aspect 56 of regular table is Barium v atomic number 56, atomic weight 137.327. Barium, price Ba, has a Body focused Cubic structure and also Silver color. Barium is a alkaline earth metal element. Trivial surname of Barium is alkaline planet metals*. Understand everything about Barium Facts, physics Properties, chemical Properties, electronic configuration, Atomic and Crystal Structure.
Barium is a chemical element with prize Ba and also atomic number 56. That is the fifth facet in group 2, a soft silvery metallic alkaline earth metal. Since of that is high chemical reactivity barium is never discovered in nature as a complimentary element.
You are watching: How many valence electrons in ba
Barium Facts
Read an essential information and also facts around element Barium
| surname | Barium |
| atomic Number | 56 |
| atom Symbol | Ba |
| Atomic weight | 137.327 |
| step | Solid |
| color | Silver |
| Classification | alkaline planet metal |
| group in periodic Table | 2 |
| Group Name | beryllium household |
| period in periodic Table | 6 |
| Block in regular Table | s-block |
| Electronic Configuration | |
| Melting point | 727 °C |
| Boiling point | 1870 °C |
| Electronic shell Structure | <2, 8, 18, 18, 8, 2> |
| CAS Number | CAS7440-39-3 |
ar
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 |
explore our interactive regular table
How to find Barium on regular Table
Periodic table is i ordered it by atomic number, variety of protons in the nucleus which is same as number of electrons. The atom number rises from left to right. Periodic table start at top left ( atom number 1) and also ends in ~ bottom appropriate (atomic number 118). As such you can directly look because that atomic number 56 to discover Barium on periodic table.
Another way to read routine table and also locate an element is by using group number (column) and period number (row). To locate Barium on periodic table look for cross ar of team 2 and period 6 in the modern-day periodic table.
explore Interactive periodic Table to Understand and Learn Cool patterns
Table of Contents
History
Abundance
Physical Properties
Thermal Properties
Crystal Structure
Atomic & orbit Properties
Chemical Properties
Isotopes
Health and Safety Parameters and Guidelines
Databases
Compare Barium with other elements
Barium History
The aspect Barium was discovered by Carl Wilhelm Scheele in year 1808 in uk . Barium derived its surname from the Greek barys, definition "heavy"
Barium Presence: abundance in Nature and Around Us
The table listed below shows the abundance of Barium in Universe, Sun, Meteorites, Earth"s Crust, Oceans and Human Body.
| diversity in world | 1×10-6% |
| diversity in sun | 1×10-6% |
| variety in Meteorites | 2.7e-06 |
| Abundance in Earth"s late | 0.00034 |
| variety in oceans | 3×10-6% |
| diversity in people | 3e-07 |
Crystal framework of Barium
The solid state structure of Barium is Body focused Cubic.
The crystal structure have the right to be explained in regards to its unit Cell. The unit cells repeats chin in 3 dimensional an are to type the structure.
Unit cell Parameters
The unit cabinet is stood for in regards to its lattice parameters, which space the lengths of the cell 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 also gamma).
| π/2 | π/2 | π/2 |
The positions of the atoms within the unit cell are defined by the set of atomic positions ( xi, yi, zi) measured indigenous a recommendation lattice point.
The symmetry nature of the decision are explained by the principle of room groups. All possible symmetric arrangements of particles in three-dimensional room are explained by the 230 room groups (219 distinct types, or 230 if chiral duplicates are considered distinct.
| room Group name | Im_ 3m |  |
| an are Group Number | 229 | |
| Crystal structure | Body centered Cubic |
Barium Atomic and also Orbital Properties
Barium atoms have 56 electrons and also the digital shell structure is <2, 8, 18, 18, 8, 2> with Atomic ax Symbol (Quantum Numbers) 1S0.
| atom Number | 56 |
| Number of electron (with no charge) | 56 |
| Number that Protons | 56 |
| Mass Number | 137 |
| Number of Neutrons | 81 |
| Shell framework (Electrons per energy level) | <2, 8, 18, 18, 8, 2> |
| Electron configuration | |
| Valence Electrons | 6s2 |
| Oxidation State | 1;2 |
| Atomic hatchet Symbol (Quantum Numbers) | 1S0 |
Shell framework of Barium - electrons per energy level
Ground State digital Configuration the Barium - neutral Barium atom
The ground state digital configuration of Neutral Barium atom isSee more: Item In Bathroom That Starts With O, Bathroom Vocabulary Word List
Unabbreviated electronic configuration that neutral Barium
Complete soil state digital configuration because that the Barium atom, Unabbreviated digital configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2
Atomic framework of Barium
Barium atom radius is 253 pm, if it"s covalent radius is 198 pm.
| atomic Radius | 253 afternoon (2.53 Å) |
| Atomic Volume | 39.1245014245 cm3 |
| Covalent Radius | 198 pm (1.98 Å) |
| valve der Waals Radius | N/A |
| ghost Cross section | 1.3 σa/barns |
Atomic Spectrum that Barium
Barium chemical 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 power of Barium
Refer to table below for Ionization energies the Barium
| 1 | 502.9 |
| 2 | 965.2 |
| 3 | 3.6×103 |
Barium physics 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 the Barium - tests to measure of Hardness that Element
| Mohs Hardness | 1.25 MPa |
| Vickers Hardness | N/A |
| Brinell Hardness | N/A |
Barium electrical Properties
Barium is Conductor that electricity. Refer to table listed below for the electrical properties that Barium
| electric Conductivity | 2.9×106 S/m |
| Resistivity | 3.5×10-7 m Ω |
| Superconducting allude | N/A |
Barium Heat and also Conduction Properties
| heat Conductivity | 18 W/(m K) |
| Thermal expansion | 0.0000206 K-1 |
Barium Magnetic Properties
| Magnetic kind | Paramagnetic |
| Curie allude | N/A |
| mass Magnetic Susceptibility | 1.13×10-8 |
| Molar Magnetic Susceptibility | 1.552×10-9 |
| Volume Magnetic Susceptibility | 3.966e-05 |
Optical properties of Barium
| Refractive table of contents | N/A |
Acoustic nature of Barium
| rate of Sound | 1620 m/s |
Barium thermal Properties - Enthalpies and thermodynamics
Refer to table listed below for thermal properties of Barium
| Melting suggest | 1×103 K (727 °C) |
| Boiling allude | 2143 K (1870 °C) |
| an important Temperature | N/A |
| Superconducting point | N/A |
Enthalpies the Barium
| heat of blend | 8 kJ/mol |
| warm of Vaporization | 140 kJ/mol |
| warm of burning | N/A |
Barium isotopes - nuclear Properties that Barium
Isotopes that rhodium. Naturally developing Barium has 7 steady 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% | stable | N/A | |
| 131Ba | ||||
| 132Ba | 0.101% | secure | N/A | |
| 133Ba | ||||
| 134Ba | 2.417% | secure | N/A | |
| 135Ba | 6.592% | steady | N/A | |
| 136Ba | 7.854% | stable | N/A | |
| 137Ba | 11.232% | secure | N/A | |
| 138Ba | 71.698% | secure | 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 |
| period Hazard course | 4.3 |
| period Numbers | 1400 |
| EU Number | N/A |
| NFPA Fire Rating | 1 |
| NFPA hazards | Water Reactive |
| NFPA health Rating | 2 |
| NFPA Reactivity Rating | 2 |
| Autoignition suggest | N/A |
| Flashpoint | N/A |
Database Search
list of distinct identifiers to search the aspect in miscellaneous chemical registry databases
| CAS Number - chemical Abstracts service (CAS) | CAS7440-39-3 |
| CID Number | CID5355457 |
| Gmelin Number | N/A |
| NSC Number | N/A |
| RTECS Number | RTECSCQ8370000 |