Beryllium properties

Atomic number

4

Atomic weigth

9.0122

Crystal structure:
Compact Hexagonal
Body-centered cubic (over 1254 ^oC )

 
a=2.854, c=3.5829, c/a=1.5677
a=2.550

Density:

1.8477 g/cm3

Melting point:

1287 ^oC

Boiling  point:

2475 ^oC

Vapor pressure:

LogP(atm)=
6.186+1.454x10^-4T-16734 T^-1

Heat of fusion:

2.8 kcal/g atom

Heat of sublimation:

76.56 kcal/mol

Heat of evaporation:

53.55 kcal/mol

Specific heat:

Cp=4.54+2.12x10^-3T-0.82x10⁵T^-2 cal/K/mol

Thermal expansion:

11.5x10^-6/ ^oC (0-50 ^oC) See Fig 1

Entropy 25 ^oC:

2.28 cal/ oC/mol

Enthalpy 25 ^oC

465 cal/mol

Electrical resistivity:

4.31 mOhm cm

Magnetic susceptibility  (293 K):

-1.00x10^-9 m³/kg

Acoustic spees:

12600m/s

Three-dimensional compression at solidification:

 3%