Chemistry Worrior

By Sohail

     OVERIEW:

                                   LATIN NAME: Berylium

                                    Symbol:Be

                                    DISCOVERY YEAR: 1797

                                    Atomic Number: 04

                                    Group: 2

                                    Period: 2

                                    Block: s

                                    CAS Number:7440-41-7

 

ATOMIC PROPERTIES:

                           ATOMIC WEIGHT: 9.012182 g/mol

                           Ionic Charge: Be2+

                           OXIDSTION STATES: +2

                           ELECTRON PER SHELL: K2 L2

                           ELECTRONIC CONFUGRATION: 1S2 2s2

                           ATOMIC RADIUS,PM: 112 pm

                           COVALENT RADIUS: 90 pm

     THERMODYNAMIC PROPERTIES:

 

                  Phase: Solid

                   Boiling Point: 2470 0C

                   Milting Point: 1287 0C

                   Fusion Heat: 7.95 KJ/mol

                   Specific Heat: 1820 KJ-1.kg-1

                   Thermal Heat Expansion: 0.0000113 k-1

                   Vaporization Heat:297 kJ/mol

 

    MATERIAL PROPERTIES:

                   Color: Slate Grey

                   Bulk Modulus: 130 GPa

                   Shear Modulus: 132 GPa

                   Young’s Modulus:287 GPa

                   Density: 1848 kg.m-3

                       Liquid density: 1690 kg.m-3

                   Mohs Hardness: 5.5

                   Brinell Hardness: 600MPa

                   Vickers Hardness:1670 MPa

                   Molar Volume: 0.000004877 m3.mol-1

                      Sound speed: 13000 m.s-1

                  Thermal Conductivity: 190 W.m-1k-1

                   Poission Ratio: 0.032

 

ELECTROMAGNETIC PROPERTIES:

 

                   Magnetic Type: Diamagnetic

                   Electrical Type: Conductor

                   Eectrical conductivity: 25000000 S.m-1

                   Volume Magnetic Susceptibility: 2328×10-4

                   Mass Magnetic Susceptibility: 126×10-7

                   Molar Magnetic Susceptibility:1136 ×10-9

                   Resistivity: 0.4×10-7 ohm.m

                   Superconductivity: 0.026 k

    REACTIVITY:

                   Electronegativity: 1.57

                   Valence: 2

                   Electron Affinity: 0 kJ.mol-1

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