Compare Beryllium vs Boron: Periodic Table Element Comparison Table and Properties
Compare the elements Beryllium and Boron on the basis of their properties, attributes and periodic table facts. Compare elements - Beryllium and Boron comparison table side by side across over 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 Beryllium vs Boron with most reliable information about their properties, attributes, facts, uses etc. You can compare Be vs B on more than 90 properties like electronegativity, oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. This in-depth comparison helps students, educators, researchers, and science enthusiasts understand the differences and similarities between Beryllium and Boron.
Beryllium and Boron Comparison
Here's a detailed comparison between Beryllium (Be) and Boron (B), focusing on their position in the periodic table, physical and chemical properties, stability, and uses.
Facts - Basic Element Details
| Name | Beryllium | Boron |
|---|---|---|
| Atomic Number | 4 | 5 |
| Atomic Symbol | Be | B |
| Atomic Weight | 9.012182 | 10.811 |
| Phase at STP | Solid | Solid |
| Color | SlateGray | Black |
| Metallic Classification | Alkaline Earth Metal | Metalloid |
| Group in Periodic Table | group 2 | group 13 |
| Group Name | beryllium family | boron family |
| Period in Periodic Table | period 2 | period 2 |
| Block in Periodic Table | s -block | p -block |
| Electronic Configuration | [He] 2s2 | [He] 2s2 2p1 |
| Electronic Shell Structure (Electrons per shell) | 2, 2 | 2, 3 |
| Melting Point | 1560 K | 2348 K |
| Boiling Point | 2743 K | 4273 K |
| CAS Number | CAS7440-41-7 | CAS7440-42-8 |
| Neighborhood Elements | Neighborhood Elements of Beryllium | Neighborhood Elements of Boron |
History
| Parameter | Beryllium | Boron |
|---|---|---|
| History | The element Beryllium was discovered by N. Vauquelin in year 1798 in France. Beryllium derived its name from beryl, a mineral. | 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. |
| Discovery | N. Vauquelin (1798) | L. Gay-Lussac and L.J. Thénard (1808) |
| Isolated | F. Wöhler and A. Bussy (1828) | H. Davy (1808) |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Beryllium | Boron |
|---|---|---|
| Abundance in Universe | 1 / 0.1 | 1 / 0.1 |
| Abundance in Sun | 0.1 / 0.01 | 2 / 0.2 |
| Abundance in Meteorites | 30 / 70 | 1600 / 3000 |
| Abundance in Earth's Crust | 1900 / 4300 | 8700 / 17000 |
| Abundance in Oceans | 0.0006 / 0.00041 | 4440 / 2500 |
| Abundance in Humans | 0.4 / 0.3 | 700 / 410 |
Crystal Structure and Atomic Structure
| Property | Beryllium | Boron |
|---|---|---|
| Atomic Volume | 4.8767 cm3/mol | 4.3947 cm3/mol |
| Atomic Radius | 112 pm | 87 pm |
| Covalent Radius | 90 pm | 82 pm |
| Van der Waals Radius | 153 pm | 192 pm |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum |  | Not available |
| Absorption Spectrum |  |  |
| Lattice Constant | 228.58, 228.58, 358.43 pm | 506, 506, 506 pm |
| Lattice Angle | π/2, π/2, 2 π/3 | 1.01334, 1.01334, 1.01334 |
| Space Group Name | P63/mmc | R_ 3m |
| Space Group Number | 194 | 166 |
| Crystal Structure | Simple Hexagonal  | Simple Trigonal  |
Atomic and Orbital Properties
| Property | Beryllium | Boron |
|---|---|---|
| Atomic Number | 4 | 5 |
| Number of Electrons (with no charge) | 4 | 5 |
| Number of Protons | 4 | 5 |
| Mass Number | 9.012182 | 10.811 |
| Number of Neutrons | 5 | 6 |
| Shell structure (Electrons per energy level) | 2, 2 | 2, 3 |
| Electron Configuration | [He] 2s2 | [He] 2s2 2p1 |
| Valence Electrons | 2s2 | 2s2 2p1 |
| Oxidation State | 2 | 3 |
| Atomic Term Symbol (Quantum Numbers) | 1S0 | 2P1/2 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Beryllium has 1 stable naturally occuring isotopes while Boron has 2 stable naturally occuring isotopes.
| Parameter | Beryllium | Boron |
|---|---|---|
| Known Isotopes | 5Be, 6Be, 7Be, 8Be, 9Be, 10Be, 11Be, 12Be, 13Be, 14Be, 15Be, 16Be | 6B, 7B, 8B, 9B, 10B, 11B, 12B, 13B, 14B, 15B, 16B, 17B, 18B, 19B |
| Stable Isotopes | Naturally occurring stable isotopes: 9Be | Naturally occurring stable isotopes: 10B, 11B |
| Neutron Cross Section | 0.0092 | 755 |
| Neutron Mass Absorption | 0.00003 | 2.4 |
Chemical Properties: Ionization Energies and electron affinity
| Property | Beryllium | Boron |
|---|---|---|
| Valence or Valency | 2 | 3 |
| Electronegativity | 1.57 Pauling Scale | 2.04 Pauling Scale |
| Oxidation State | 2 | 3 |
| Electron Affinity | 0 kJ/mol | 26.7 kJ/mol |
| Ionization Energies | 1st: 899.5 kJ/mol 2nd: 1757.1 kJ/mol 3rd: 14848.7 kJ/mol 4th: 21006.6 kJ/mol | 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 |
Physical Properties
Beryllium (1.848 g/cm³) is less dense than Boron (2.46 g/cm³). This means that a given volume of Boron will be heavier than the same volume of Beryllium. Boron is about 33.1 denser than Beryllium
| Property | Beryllium | Boron |
|---|---|---|
| Phase at STP | Solid | Solid |
| Color | SlateGray | Black |
| Density | 1.848 g/cm3 | 2.46 g/cm3 |
| Density (when liquid (at melting point)) | 1.69 g/cm3 | 2.08 g/cm3 |
| Molar Volume | 4.8767 cm3/mol | 4.3947 cm3/mol |
Mechanical and Hardness Properties
| Property | Beryllium | Boron |
|---|---|---|
Elastic Properties | ||
| Young Modulus | 287 | - |
| Shear Modulus | 132 GPa | - |
| Bulk Modulus | 130 GPa | 320 GPa |
| Poisson Ratio | 0.032 | - |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | 5.5 MPa | 9.3 MPa |
| Vickers Hardness | 1670 MPa | 49000 MPa |
| Brinell Hardness | 600 MPa | - |
Thermal and Electrical Conductivity
| Property | Beryllium | Boron |
|---|---|---|
Heat and Conduction Properties | ||
| Thermal Conductivity | 190 W/(m K) | 27 W/(m K) |
| Thermal Expansion | 0.0000113 /K | 0.000006 /K |
Electrical Properties | ||
| Electrical Conductivity | 25000000 S/m | 0.0001 S/m |
| Resistivity | 4e-8 m Ω | 10000 m Ω |
| Superconducting Point | 0.026 | - |
Magnetic and Optical Properties
| Property | Beryllium | Boron |
|---|---|---|
Magnetic Properties | ||
| Magnetic Type | Diamagnetic | Diamagnetic |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | -1.26e-8 m3/kg | -8.7e-9 m3/kg |
| Molar Magnetic Susceptibility | -1.136e-10 m3/mol | -9.41e-11 m3/mol |
| Volume Magnetic Susceptibility | -0.00002328 | -0.0000214 |
Optical Properties | ||
| Refractive Index | - | - |
Acoustic Properties | ||
| Speed of Sound | 13000 m/s | 16200 m/s |
Thermal Properties - Enthalpies and thermodynamics
| Property | Beryllium | Boron |
|---|---|---|
| Melting Point | 1560 K | 2348 K |
| Boiling Point | 2743 K | 4273 K |
| Critical Temperature | - | - |
| Superconducting Point | 0.026 | - |
Enthalpies | ||
| Heat of Fusion | 7.95 kJ/mol | 50 kJ/mol |
| Heat of Vaporization | 297 kJ/mol | 507 kJ/mol |
| Heat of Combustion | - | - |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Beryllium | Boron |
|---|---|---|
| CAS Number | CAS7440-41-7 | CAS7440-42-8 |
| RTECS Number | RTECSDS1750000 | RTECSED7350000 |
| DOT Hazard Class | 6.1 | - |
| DOT Numbers | 1567 | - |
| EU Number | - | - |
| NFPA Fire Rating | 1 | 3 |
| NFPA Health Rating | 3 | 2 |
| NFPA Reactivity Rating | 0 | 0 |
| NFPA Hazards | - | - |
| AutoIgnition Point | - | - |
| Flashpoint | - | - |
Compare Beryllium and Boron With Other Elements
Compare Beryllium and Boron with other elements of the periodic table. Explore howBeryllium and Boron stack up against other elements of the periodic table. Use our interactive comparison tool to analyze 90+ properties across different metals, non-metals, metalloids, and noble gases. Understanding these differences is crucial for applications in engineering, chemistry, electronics, biology, and material science.
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