Periodic Table Element Comparison: Compare Elements - Beryllium vs Boron
Compare Beryllium and Boron 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 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. Beryllium and Boron comparison table on more than 90 properties.
Beryllium and Boron Comparison
Facts
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 |
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
Property | Beryllium | Boron |
---|---|---|
Density | 1.848 g/cm3 | 2.46 g/cm3 |
Molar Volume | 4.8767 cm3/mol | 4.3947 cm3/mol |
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 | - |
Electrical Properties | ||
Electrical Conductivity | 25000000 S/m | 0.0001 S/m |
Resistivity | 4e-8 m Ω | 10000 m Ω |
Superconducting Point | 0.026 | - |
Heat and Conduction Properties | ||
Thermal Conductivity | 190 W/(m K) | 27 W/(m K) |
Thermal Expansion | 0.0000113 /K | 0.000006 /K |
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 With Other Elements
Compare Beryllium and Boron with other elements of the periodic table.
Compare Beryllium with all Group 2 elementsCompare Beryllium with MagnesiumCompare Beryllium with CalciumCompare Beryllium with StrontiumCompare Beryllium with BariumCompare Beryllium with Radium Compare Beryllium with all Period 2 elementsCompare Beryllium with LithiumCompare Beryllium with BoronCompare Beryllium with CarbonCompare Beryllium with NitrogenCompare Beryllium with OxygenCompare Beryllium with FluorineCompare Beryllium with Neon Compare Beryllium with all Alkaline Earth Metal elements | Compare Boron with all Group 13 elementsBoron vs Aluminium ComparisonBoron vs Gallium ComparisonBoron vs Indium ComparisonBoron vs Thallium ComparisonBoron vs Nihonium Comparison Compare Boron with all Period 2 elementsBoron vs Lithium ComparisonBoron vs Beryllium ComparisonBoron vs Carbon ComparisonBoron vs Nitrogen ComparisonBoron vs Oxygen ComparisonBoron vs Fluorine ComparisonBoron vs Neon Comparison Compare Boron with all Metalloid elements |