Periodic Table Element Comparison: Compare Elements - Boron vs Thallium
Compare Boron and Thallium
Compare Boron and Thallium 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 Boron vs Thallium with most reliable information about their properties, attributes, facts, uses etc. You can compare B vs Tl on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.
Facts
| Name | Boron | Thallium |
| Atomic Number | 5 | 81 |
| Atomic Symbol | B | Tl |
| Atomic Weight | 10.811 | 204.3833 |
| Phase at STP | Solid | Solid |
| Color | Black | Silver |
| Metallic Classification | Metalloid | Post Transition Metal |
| Group in Periodic Table | group 13 | group 13 |
| Group Name | boron family | boron family |
| Period in Periodic Table | period 2 | period 6 |
| Block in Periodic Table | p -block | p -block |
| Electronic Configuration | [He] 2s2 2p1 | [Xe] 4f14 5d10 6s2 6p1 |
| Electronic Shell Structure (Electrons per shell) | 2, 3 | 2, 8, 18, 32, 18, 3 |
| Melting Point | 2348 K | 577 K |
| Boiling Point | 4273 K | 1746 K |
| CAS Number | CAS7440-42-8 | CAS7440-28-0 |
| Neighborhood Elements | Neighborhood Elements of Boron | Neighborhood Elements of Thallium |
History
| History | The element Boron was discovered by L. Gay-Lussac and L.J. Thénard in year 1808 in France and United Kingdom. Boron derived its name from borax, a mineral. | The element Thallium was discovered by W. Crookes in year 1861 in United Kingdom. Thallium derived its name from the Greek thallos, 'green twig'. |
| Discovery | L. Gay-Lussac and L.J. Thénard (1808) | W. Crookes (1861) |
| Isolated | H. Davy (1808) | C.-A. Lamy (1862) |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Abundance in Universe | 1 / 0.1 | 0.5 / 0.003 |
| Abundance in Sun | 2 / 0.2 | 1 / 0.01 |
| Abundance in Meteorites | 1600 / 3000 | 80 / 6 |
| Abundance in Earth's Crust | 8700 / 17000 | 530 / 50 |
| Abundance in Oceans | 4440 / 2500 | 0.001 / 0.000030 |
| Abundance in Humans | 700 / 410 | - / - |
Crystal Structure and Atomic Structure
| Atomic Volume | 4.3947 cm3/mol | 17.24 cm3/mol |
| Atomic Radius | 87 pm | 156 pm |
| Covalent Radius | 82 pm | 148 pm |
| Van der Waals Radius | 192 pm | 196 pm |
| Atomic Spectrum |  |  |
| Lattice Constant | 506, 506, 506 pm | 345.66, 345.66, 552.48 pm |
| Lattice Angle | 1.01334, 1.01334, 1.01334 | π/2, π/2, 2 π/3 |
| Space Group Name | R_ 3m | P63/mmc |
| Space Group Number | 166 | 194 |
| Crystal Structure | Simple Trigonal  | Simple Hexagonal  |
Atomic and Orbital Properties
| Atomic Number | 5 | 81 |
| Number of Electrons (with no charge) | 5 | 81 |
| Number of Protons | 5 | 81 |
| Mass Number | 10.811 | 204.3833 |
| Number of Neutrons | 6 | 123 |
| Shell structure (Electrons per energy level) | 2, 3 | 2, 8, 18, 32, 18, 3 |
| Electron Configuration | [He] 2s2 2p1 | [Xe] 4f14 5d10 6s2 6p1 |
| Valence Electrons | 2s2 2p1 | 6s2 6p1 |
| Oxidation State | 3 | 1, 3 |
| Atomic Term Symbol (Quantum Numbers) | 2P1/2 | 2P1/2 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Boron has 2 stable naturally occuring isotopes while Thallium has 2 stable naturally occuring isotopes.
| Known Isotopes | 6B, 7B, 8B, 9B, 10B, 11B, 12B, 13B, 14B, 15B, 16B, 17B, 18B, 19B | 176Tl, 177Tl, 178Tl, 179Tl, 180Tl, 181Tl, 182Tl, 183Tl, 184Tl, 185Tl, 186Tl, 187Tl, 188Tl, 189Tl, 190Tl, 191Tl, 192Tl, 193Tl, 194Tl, 195Tl, 196Tl, 197Tl, 198Tl, 199Tl, 200Tl, 201Tl, 202Tl, 203Tl, 204Tl, 205Tl, 206Tl, 207Tl, 208Tl, 209Tl, 210Tl, 211Tl, 212Tl |
| Stable Isotopes | Naturally occurring stable isotopes: 10B, 11B | Naturally occurring stable isotopes: 203Tl, 205Tl |
| Neutron Cross Section | 755 | 3.4 |
| Neutron Mass Absorption | 2.4 | 0.0006 |
Chemical Properties: Ionization Energies and electron affinity
| Valence or Valency | 3 | 3 |
| Electronegativity | 2.04 Pauling Scale | 1.62 Pauling Scale |
| Electron Affinity | 26.7 kJ/mol | 19.2 kJ/mol |
| Ionization Energies | 1st: 800.6 kJ/mol 2nd: 2427.1 kJ/mol 3rd: 3659.7 kJ/mol 4th: 25025.8 kJ/mol 5th: 32826.7 kJ/mol | 1st: 589.4 kJ/mol 2nd: 1971 kJ/mol 3rd: 2878 kJ/mol |
Physical Properties
| Density | 2.46 g/cm3 | 11.85 g/cm3 |
| Molar Volume | 4.3947 cm3/mol | 17.24 cm3/mol |
Elastic Properties | ||
| Young Modulus | - | 8 |
| Shear Modulus | - | 2.8 GPa |
| Bulk Modulus | 320 GPa | 43 GPa |
| Poisson Ratio | - | 0.45 |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | 9.3 MPa | 1.2 MPa |
| Vickers Hardness | 49000 MPa | - |
| Brinell Hardness | - | 26.4 MPa |
Electrical Properties | ||
| Electrical Conductivity | 0.0001 S/m | 6700000 S/m |
| Resistivity | 10000 m Ω | 1.5e-7 m Ω |
| Superconducting Point | - | 2.38 |
Heat and Conduction Properties | ||
| Thermal Conductivity | 27 W/(m K) | 46 W/(m K) |
| Thermal Expansion | 0.000006 /K | 0.0000299 /K |
Magnetic Properties | ||
| Magnetic Type | Diamagnetic | Diamagnetic |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | -8.7e-9 m3/kg | -3e-9 m3/kg |
| Molar Magnetic Susceptibility | -9.41e-11 m3/mol | -6.13e-10 m3/mol |
| Volume Magnetic Susceptibility | -0.0000214 | -0.0000356 |
Optical Properties | ||
| Refractive Index | - | - |
Acoustic Properties | ||
| Speed of Sound | 16200 m/s | 818 m/s |
Thermal Properties - Enthalpies and thermodynamics
| Melting Point | 2348 K | 577 K |
| Boiling Point | 4273 K | 1746 K |
| Critical Temperature | - | - |
| Superconducting Point | - | 2.38 |
Enthalpies | ||
| Heat of Fusion | 50 kJ/mol | 4.2 kJ/mol |
| Heat of Vaporization | 507 kJ/mol | 165 kJ/mol |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| CAS Number | CAS7440-42-8 | CAS7440-28-0 |
| RTECS Number | RTECSED7350000 | RTECSXG3425000 |
| DOT Hazard Class | - | - |
| DOT Numbers | - | 1707 |
| EU Number | - | - |
| NFPA Fire Rating | 3 | - |
| NFPA Hazards | - | - |
| NFPA Health Rating | 2 | - |
| NFPA Reactivity Rating | 0 | - |
| AutoIgnition Point | - | - |
| Flashpoint | - | - |
Compare With Other Elements
Compare Boron with all Group 13 elementsCompare Boron with all Period 2 elementsBoron vs LithiumBoron vs NeonBoron vs FluorineBoron vs CarbonBoron vs BerylliumBoron vs NitrogenBoron vs Oxygen Compare Boron with all Metalloid elements | Compare Thallium with all Group 13 elementsCompare Thallium with all Period 6 elementsThallium vs DysprosiumThallium vs SamariumThallium vs EuropiumThallium vs AstatineThallium vs PraseodymiumThallium vs TungstenThallium vs ThuliumThallium vs LeadThallium vs LutetiumThallium vs TantalumThallium vs RheniumThallium vs BariumThallium vs LanthanumThallium vs PromethiumThallium vs RadonThallium vs MercuryThallium vs IridiumThallium vs GadoliniumThallium vs BismuthThallium vs PlatinumThallium vs CesiumThallium vs CeriumThallium vs NeodymiumThallium vs TerbiumThallium vs HolmiumThallium vs ErbiumThallium vs YtterbiumThallium vs HafniumThallium vs OsmiumThallium vs GoldThallium vs Polonium Compare Thallium with all Post Transition Metal elements |