Periodic Table Element Comparison: Compare Elements - Boron vs Beryllium
Compare Boron and Beryllium 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 Beryllium with most reliable information about their properties, attributes, facts, uses etc. You can compare B vs Be on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. Boron and Beryllium comparison table on more than 90 properties.
Boron and Beryllium Comparison
Facts
| Name | Boron | Beryllium |
|---|---|---|
| Atomic Number | 5 | 4 |
| Atomic Symbol | B | Be |
| Atomic Weight | 10.811 | 9.012182 |
| Phase at STP | Solid | Solid |
| Color | Black | SlateGray |
| Metallic Classification | Metalloid | Alkaline Earth Metal |
| Group in Periodic Table | group 13 | group 2 |
| Group Name | boron family | beryllium family |
| Period in Periodic Table | period 2 | period 2 |
| Block in Periodic Table | p -block | s -block |
| Electronic Configuration | [He] 2s2 2p1 | [He] 2s2 |
| Electronic Shell Structure (Electrons per shell) | 2, 3 | 2, 2 |
| Melting Point | 2348 K | 1560 K |
| Boiling Point | 4273 K | 2743 K |
| CAS Number | CAS7440-42-8 | CAS7440-41-7 |
| Neighborhood Elements | Neighborhood Elements of Boron | Neighborhood Elements of Beryllium |
History
| Parameter | Boron | Beryllium |
|---|---|---|
| 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 Beryllium was discovered by N. Vauquelin in year 1798 in France. Beryllium derived its name from beryl, a mineral. |
| Discovery | L. Gay-Lussac and L.J. Thénard (1808) | N. Vauquelin (1798) |
| Isolated | H. Davy (1808) | F. Wöhler and A. Bussy (1828) |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Boron | Beryllium |
|---|---|---|
| Abundance in Universe | 1 / 0.1 | 1 / 0.1 |
| Abundance in Sun | 2 / 0.2 | 0.1 / 0.01 |
| Abundance in Meteorites | 1600 / 3000 | 30 / 70 |
| Abundance in Earth's Crust | 8700 / 17000 | 1900 / 4300 |
| Abundance in Oceans | 4440 / 2500 | 0.0006 / 0.00041 |
| Abundance in Humans | 700 / 410 | 0.4 / 0.3 |
Crystal Structure and Atomic Structure
| Property | Boron | Beryllium |
|---|---|---|
| Atomic Volume | 4.3947 cm3/mol | 4.8767 cm3/mol |
| Atomic Radius | 87 pm | 112 pm |
| Covalent Radius | 82 pm | 90 pm |
| Van der Waals Radius | 192 pm | 153 pm |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum | Not available |  |
| Absorption Spectrum |  |  |
| Lattice Constant | 506, 506, 506 pm | 228.58, 228.58, 358.43 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
| Property | Boron | Beryllium |
|---|---|---|
| Atomic Number | 5 | 4 |
| Number of Electrons (with no charge) | 5 | 4 |
| Number of Protons | 5 | 4 |
| Mass Number | 10.811 | 9.012182 |
| Number of Neutrons | 6 | 5 |
| Shell structure (Electrons per energy level) | 2, 3 | 2, 2 |
| Electron Configuration | [He] 2s2 2p1 | [He] 2s2 |
| Valence Electrons | 2s2 2p1 | 2s2 |
| Oxidation State | 3 | 2 |
| Atomic Term Symbol (Quantum Numbers) | 2P1/2 | 1S0 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Boron has 2 stable naturally occuring isotopes while Beryllium has 1 stable naturally occuring isotopes.
| Parameter | Boron | Beryllium |
|---|---|---|
| Known Isotopes | 6B, 7B, 8B, 9B, 10B, 11B, 12B, 13B, 14B, 15B, 16B, 17B, 18B, 19B | 5Be, 6Be, 7Be, 8Be, 9Be, 10Be, 11Be, 12Be, 13Be, 14Be, 15Be, 16Be |
| Stable Isotopes | Naturally occurring stable isotopes: 10B, 11B | Naturally occurring stable isotopes: 9Be |
| Neutron Cross Section | 755 | 0.0092 |
| Neutron Mass Absorption | 2.4 | 0.00003 |
Chemical Properties: Ionization Energies and electron affinity
| Property | Boron | Beryllium |
|---|---|---|
| Valence or Valency | 3 | 2 |
| Electronegativity | 2.04 Pauling Scale | 1.57 Pauling Scale |
| Electron Affinity | 26.7 kJ/mol | 0 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: 899.5 kJ/mol 2nd: 1757.1 kJ/mol 3rd: 14848.7 kJ/mol 4th: 21006.6 kJ/mol |
Physical Properties
| Property | Boron | Beryllium |
|---|---|---|
| Density | 2.46 g/cm3 | 1.848 g/cm3 |
| Molar Volume | 4.3947 cm3/mol | 4.8767 cm3/mol |
Elastic Properties | ||
| Young Modulus | - | 287 |
| Shear Modulus | - | 132 GPa |
| Bulk Modulus | 320 GPa | 130 GPa |
| Poisson Ratio | - | 0.032 |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | 9.3 MPa | 5.5 MPa |
| Vickers Hardness | 49000 MPa | 1670 MPa |
| Brinell Hardness | - | 600 MPa |
Electrical Properties | ||
| Electrical Conductivity | 0.0001 S/m | 25000000 S/m |
| Resistivity | 10000 m Ω | 4e-8 m Ω |
| Superconducting Point | - | 0.026 |
Heat and Conduction Properties | ||
| Thermal Conductivity | 27 W/(m K) | 190 W/(m K) |
| Thermal Expansion | 0.000006 /K | 0.0000113 /K |
Magnetic Properties | ||
| Magnetic Type | Diamagnetic | Diamagnetic |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | -8.7e-9 m3/kg | -1.26e-8 m3/kg |
| Molar Magnetic Susceptibility | -9.41e-11 m3/mol | -1.136e-10 m3/mol |
| Volume Magnetic Susceptibility | -0.0000214 | -0.00002328 |
Optical Properties | ||
| Refractive Index | - | - |
Acoustic Properties | ||
| Speed of Sound | 16200 m/s | 13000 m/s |
Thermal Properties - Enthalpies and thermodynamics
| Property | Boron | Beryllium |
|---|---|---|
| Melting Point | 2348 K | 1560 K |
| Boiling Point | 4273 K | 2743 K |
| Critical Temperature | - | - |
| Superconducting Point | - | 0.026 |
Enthalpies | ||
| Heat of Fusion | 50 kJ/mol | 7.95 kJ/mol |
| Heat of Vaporization | 507 kJ/mol | 297 kJ/mol |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Boron | Beryllium |
|---|---|---|
| CAS Number | CAS7440-42-8 | CAS7440-41-7 |
| RTECS Number | RTECSED7350000 | RTECSDS1750000 |
| DOT Hazard Class | - | 6.1 |
| DOT Numbers | - | 1567 |
| EU Number | - | - |
| NFPA Fire Rating | 3 | 1 |
| NFPA Health Rating | 2 | 3 |
| NFPA Reactivity Rating | 0 | 0 |
| NFPA Hazards | - | - |
| AutoIgnition Point | - | - |
| Flashpoint | - | - |
Compare With Other Elements
Compare Boron and Beryllium with other elements of the periodic table.
Compare Boron with all Group 13 elementsCompare Boron with AluminiumCompare Boron with GalliumCompare Boron with IndiumCompare Boron with ThalliumCompare Boron with Nihonium Compare Boron with all Period 2 elementsCompare Boron with LithiumCompare Boron with BerylliumCompare Boron with CarbonCompare Boron with NitrogenCompare Boron with OxygenCompare Boron with FluorineCompare Boron with Neon Compare Boron with all Metalloid elements | Compare Beryllium with all Group 2 elementsBeryllium vs Magnesium ComparisonBeryllium vs Calcium ComparisonBeryllium vs Strontium ComparisonBeryllium vs Barium ComparisonBeryllium vs Radium Comparison Compare Beryllium with all Period 2 elementsBeryllium vs Lithium ComparisonBeryllium vs Boron ComparisonBeryllium vs Carbon ComparisonBeryllium vs Nitrogen ComparisonBeryllium vs Oxygen ComparisonBeryllium vs Fluorine ComparisonBeryllium vs Neon Comparison Compare Beryllium with all Alkaline Earth Metal elements |