#4
Beryllium
alkaline earth metal· Solid·9.01218315 u
Beryllium is a chemical element with symbol Be and atomic number 4. It is created through stellar nucleosynthesis and is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements in minerals.
Read on Wikipedia
Identity
- Symbol
- Be
- Atomic Number
- 4
- Atomic Mass
- 9.01218315 u
- Category
- alkaline earth metal
- Block
- s-block
- Period
- 2
- Group
- 2
- Appearance
- white-gray metallic
- Year Discovered
- 1798 CE
- Discovered By
- Louis Nicolas Vauquelin
- Named By
- beryl
Electrons
- Configuration
- [He] 2s2
- Full Configuration
- 1s2 2s2
- Shells
- 2, 2
- Electronegativity
- 1.57
- Electron Affinity
- -48
- Oxidation States
- +2
- Ionization Energies
- 899.5, 1757.1, 14848.7, 21006.6
Physical Properties
- State at
- Solid
- Melting Point
- 1560
- Boiling Point
- 2742
- Density
- 1.85
- Molar Heat
- 16.443 J/(mol·K)
- Crystal Structure
- HEX
- Magnetic Ordering
- Diamagnetic
Mechanical
- Atomic Radius
- 112 pm
- Covalent Radius
- 102 pm
- Van der Waals
- 153 pm
- Metallic Radius
- 112 pm
- Mohs Hardness
- 5.5
- Brinell Hardness
- 600 MPa MPa
- Vickers Hardness
- 1670 MPa MPa
- Bulk Modulus
- 130 GPa GPa
- Shear Modulus
- 132 GPa GPa
- Young's Modulus
- 287 GPa GPa
Thermal & Electrical
- Thermal Conductivity
- 200 W/(m K) W/(m·K)
- Electrical Conductivity
- 25000000 S/m S/m
- Specific Heat
- 1825 J/(kg K) J/(g·K)
- Heat of Vaporization
- 297 kJ/mol kJ/mol
- Heat of Fusion
- 7.95 kJ/mol kJ/mol
Abundance
- Universe
- 1.00 ppb
- Sun
- 1.00 ppb
- Meteorite
- 25 ppb
- Earth's Crust
- 1.85 ppm
- Ocean
- 5.60 ppt
- Human Body
- 40.0 ppt