Berillium

Berillium (Be)

chemical element with symbol Be and atomic number 4
Atomic Number4
Atomic Weight9.0121831
Massagetal9
Group2
Period2
Blocks
proton4 p+
neutron5 n0
elektron4 e-
Animated Bohr model of Be (Berillium)

Physical Property

Atoomradius
105 pm
molar volume
Covalent Radius
102 pm
Metallic Radius
89 pm
Ioonradius
16 pm
Crystal Radius
30 pm
Van der Waals radius
153 pm
density
1,85 g/cm³
Atomic Radii Of The Elements: Berillium0102030405060708090100110120130140150160pmAtoomradiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energie
proton affinity
electron affinity
ionization energy
9,322699 eV/particle
ionization energy of Be (Berillium)
Verdampingswarmte
309 kJ/mol
smeltingswarmte
12,21 kJ/mol
Vormingsentalpie
324 kJ/mol
elektron
Elektronskil2, 2
Bohr model: Be (Berillium)
Valenselektrone2
Lewisteorie: Be (Berillium)
elektronkonfigurasie[He] 2s2
1s2 2s2
Enhanced Bohr model of Be (Berillium)
Orbital Diagram of Be (Berillium)
Oksidasietoestand0, 1, 2
Elektronegatiwiteit
1.57
Electrophilicity Index
0,5110145863657444 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
2 741,15 K
Melting Point
1 560,15 K
critical pressure
critical temperature
5 205,15 K
triple point
appearance
kleur
Slate Gray
appearancewhite-gray metallic
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000113 1/K
molar heat capacity
16,443 J/(mol K)
Specific Heat Capacity
1,825 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
Geleidingsvermoë
25 MS/m
Elektriese resistiwiteit
0,00000003999999999998 m Ω
superconductivity
0,026 K
Magnetisme
typediamagnetic
magnetic susceptibility (Mass)
-0,0000000126 m³/Kg
magnetic susceptibility (Molar)
-0,0000000001136 m³/mol
magnetic susceptibility (Volume)
-0,00002328
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2,29 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
5,5 MPa
Massamodulus
130 GPa
Skuifmodulus
132 GPa
Young se modulus
287 GPa
Poisson se verhouding
0,032
Spoed van klank
13 000 m/s
classification
CategoryAlkaline earth metals, Alkaline earth metals
CAS GroupIIA
IUPAC GroupIIA
Glawe Number77
Mendeleev Number75
Pettifor Number77
Geochemical Classalkaline earth metal
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
37,74 ± 0,03 a₀
C6 Dispersion Coefficient
227 a₀
allotrope
Neutron cross section
0,0092
Neutron Mass Absorption
0,00003
quantum number1S0
Ruimtegroep194 (P63/mmc)

Isotopes of Beryllium

Stable Isotopes1
Unstable Isotopes11
Natural Isotopes1

5Be

Massagetal5
neutron number1
relative atomic mass
5,03987 ± 0,00215 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum
parity+

decay modeintensity
p (proton emission)

6Be

Massagetal6
neutron number2
relative atomic mass
6,019726409 ± 0,000005848 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
5 ± 0,3 zs
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1958
parity+

decay modeintensity
2p (2-proton emission)100%

7Be

Massagetal7
neutron number3
relative atomic mass
7,016928714 ± 0,000000076 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
53,22 ± 0,06 d
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1938
parity-

decay modeintensity
ϵ (electron capture)100%

8Be

Massagetal8
neutron number4
relative atomic mass
8,005305102 ± 0,000000037 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
81,9 ± 3,7 as
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1932
parity+

decay modeintensity
α (α emission)100%

9Be

Massagetal9
neutron number5
relative atomic mass
9,012183062 ± 0,000000082 Da
g-factor
-0,78495333333333 ± 0,0000033333333333333
natural abundance
100
radioaktiwiteitStabiele isotoop
HalfleeftydNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0,0529 ± 0,0004
ontdekkingsdatum1921
parity-

10Be

Massagetal10
neutron number6
relative atomic mass
10,013534692 ± 0,000000086 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,387 ± 0,012 My
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1935
parity+

decay modeintensity
β (β decay)100%

11Be

Massagetal11
neutron number7
relative atomic mass
11,02166108 ± 0,000000255 Da
g-factor
-3,3632 ± 0,0016
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
13,76 ± 0,07 s
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1958
parity+

decay modeintensity
β (β decay)100%
βα (β-delayed α emission)3.3%
B-p0.0013%
β n (β-delayed neutron emission)

12Be

Massagetal12
neutron number8
relative atomic mass
12,026922082 ± 0,000002048 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
21,46 ± 0,05 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1966
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.5%

13Be

Massagetal13
neutron number9
relative atomic mass
13,036134506 ± 0,000010929 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1 ± 0,7 zs
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1983
parity-

decay modeintensity
n (neutron emission)

14Be

Massagetal14
neutron number10
relative atomic mass
14,04289292 ± 0,00014197 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
4,53 ± 0,27 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1973
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)86%
2n (2-neutron emission)5%
β t (β-delayed triton emission)0.02%
βα (β-delayed α emission)0.004%

15Be

Massagetal15
neutron number11
relative atomic mass
15,053490215 ± 0,00017799 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
790 ± 270 ys
spin5/2
nuclear quadrupole moment
ontdekkingsdatum2013
parity+

decay modeintensity
n (neutron emission)100%

16Be

Massagetal16
neutron number12
relative atomic mass
16,061672036 ± 0,00017799 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
650 ± 130 ys
spin0
nuclear quadrupole moment
0
ontdekkingsdatum2012
parity+

decay modeintensity
2n (2-neutron emission)100%
Beryllium nuggets 2
Electron shell de 004 Beryllium

geskiedenis

Ontdek deurFredrich Wöhler, A.A.Bussy
ligging van ontdekkingGermany/France
ontdekkingsdatum1798
etimologieGreek: beryllos, "beryl" (a mineral).
uitspraakbeh-RIL-i-em (Engels)

source

Abundance
Abundance in Earth's crust
2,8 mg/kg
natural abundance (oseaan)
0,0000056 mg/L
natural abundance (human body)
0,00000004 %
natural abundance (Meteoroïde)
0,0000029 %
natural abundance (Son)
0,00000001 %
Abundance in Universe
0,0000001 %

Nuclear Screening Constants

1s0.3152
2s2.088