Beryllium Element Properties

Beryllium

s3
Li
Lithium
s4
Be
Beryllium
p5
B
Boron
General
Name(Beryllium)
Symbol(Be)
Number(4)
Group Number(2)
Group(Alkali earth metals)
Block(s)
Density(1.848 g/cm3)
Atomic Weight(9.01218 g/mol)
Atomic Volume(5.0 cm3/mol)
Discover(1797)


States
State(Solid)
Melting Point(1560 K)
Boiling Point(2742 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(7.895 kJ/mol)
Heat of Vaporization(297 kJ/mol)


Energies
First Ionization Energy(899.4 kJ/mole)
Second Ionization Energy(1757.1 kJ/mole)
Third Ionization Energy(14848.3 kJ/mole)
Electronegativity(1.57)
Electron Affinity(Nil)
Specific Heat(1.82 J/gK)
Heat Atomization( 324 kJ/mole atoms)


Oxidation and Electrons
Shells(2,2)
Electron Configuration(1s22s1)
Minimum Oxidation Number(0)
Maximum Oxidation Number(2)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(2)


Appearance and Characteristics
Crystal Structure(hexagonal)
Characteristics(toxic)
Color(steel gray)
Uses(Cu alloys, X-ray windows)
Hardness(mohs)
Toxicity(Yes)


Reactions
Reaction with Air(vigorous, w/ht=>BeO,Be3N2)
Reaction with 6M HCl(mild, =>H2)
Reaction with 15M HNO3(None)
Reaction with 6M NaOH(mild, =>H2, [Be(OH)4](2-))


Other Forms
Number of Isotopes(1)
Hydride(BeH2)
Oxide(BeO)
Chloride(BeCl2)


Radius
Atomic Radius(112 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(59 pm)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(Nil)


Conductivity
Thermal Conductivity(201 J/m-sec-deg)
Electrical Conductivity(250 1/mohm-cm)
Polarizability(5.6 A3)


Abundance
Source(Beryl (silicate))
Relation Abundance Solar System(-0.137 log)
Abundance Earths Crust(0.4 log)


s3
Li
Lithium
s4
Be
Beryllium
p5
B
Boron

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