Berilli

Berilli (Be)

chemical element with symbol Be and atomic number 4
Atomic Number4
Atomic Weight9.0121831
mass number9
Group2
Period2
Blocks
proton4 p+
neutron5 n0
electron4 e-
Animated Bohr model of Be (Berilli)

Proprietat Fisica

Rai Atomic
105 pm
molar volume
covalent radius
102 pm
Metallic Radius
89 pm
ionic radius
16 pm
Crystal Radius
30 pm
Rai de van der Waals
153 pm
densitat
1.85 g/cm³
Atomic Radii Of The Elements: Berilli0102030405060708090100110120130140150160pmRai AtomicCovalent RadiusMetallic RadiusRai de van der Waals

Chemical Property

energia
proton affinity
electron affinity
ionization energy
9.322699 eV/particle
ionization energy of Be (Berilli)
enthalpy of vaporization
309 kJ/mol
enthalpy of fusion
12.21 kJ/mol
standard enthalpy of formation
324 kJ/mol
electron
electron shell2, 2
Bohr model: Be (Berilli)
valence electron2
Lewis structure: Be (Berilli)
electron configuration[He] 2s2
1s2 2s2
Enhanced Bohr model of Be (Berilli)
Orbital Diagram of Be (Berilli)
oxidation number0, 1, 2
Electronegativitat
1.57
Electrophilicity Index
0.5110145863657444 eV/particle
fundamental state of matter
estat de la matèriaSolid
gaseous state of matter
Boiling Point
2741.15 K
Melting Point
1560.15 K
critical pressure
critical temperature
5205.15 K
Ponch triple
appearance
Color
Slate Gray
appearancewhite-gray metallic
Indici de refraccion
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
electrical conductivity
25 MS/m
electrical resistivity
0.00000003999999999998 m Ω
superconductivity
0.026 K
magnetism
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
estructura
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2.29 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
Duretat
5.5 MPa
bulk modulus
130 GPa
shear modulus
132 GPa
Young's modulus
287 GPa
Poisson's ratio
0.032
speed of sound
13000 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
space group194 (P63/mmc)

Isotopes of Beryllium

Stable Isotopes1
Unstable Isotopes11
Natural Isotopes1

5Be

mass number5
neutron number1
relative atomic mass
5.03987 ± 0.00215 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
Espin1/2
nuclear quadrupole moment
0
data de descobèrta
parity+

decay modeintensity
p (proton emission)

6Be

mass number6
neutron number2
relative atomic mass
6.019726409 ± 0.000005848 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
5 ± 0.3 zs
Espin0
nuclear quadrupole moment
0
data de descobèrta1958
parity+

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

7Be

mass number7
neutron number3
relative atomic mass
7.016928714 ± 0.000000076 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
53.22 ± 0.06 d
Espin3/2
nuclear quadrupole moment
data de descobèrta1938
parity-

decay modeintensity
ϵ (electron capture)100%

8Be

mass number8
neutron number4
relative atomic mass
8.005305102 ± 0.000000037 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
81.9 ± 3.7 as
Espin0
nuclear quadrupole moment
0
data de descobèrta1932
parity+

decay modeintensity
α (α emission)100%

9Be

mass number9
neutron number5
relative atomic mass
9.012183062 ± 0.000000082 Da
g-factor
-0.78495333333333 ± 0.0000033333333333333
natural abundance
100
Radioactivitatstable isotope
SemividaNot Radioactive ☢️
Espin3/2
nuclear quadrupole moment
0.0529 ± 0.0004
data de descobèrta1921
parity-

10Be

mass number10
neutron number6
relative atomic mass
10.013534692 ± 0.000000086 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
1.387 ± 0.012 My
Espin0
nuclear quadrupole moment
0
data de descobèrta1935
parity+

decay modeintensity
β (β decay)100%

11Be

mass number11
neutron number7
relative atomic mass
11.02166108 ± 0.000000255 Da
g-factor
-3.3632 ± 0.0016
natural abundance
Radioactivitat☢️ radioactive element
Semivida
13.76 ± 0.07 s
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1958
parity+

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

12Be

mass number12
neutron number8
relative atomic mass
12.026922082 ± 0.000002048 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
21.46 ± 0.05 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1966
parity+

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

13Be

mass number13
neutron number9
relative atomic mass
13.036134506 ± 0.000010929 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
1 ± 0.7 zs
Espin1/2
nuclear quadrupole moment
0
data de descobèrta1983
parity-

decay modeintensity
n (neutron emission)

14Be

mass number14
neutron number10
relative atomic mass
14.04289292 ± 0.00014197 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
4.53 ± 0.27 ms
Espin0
nuclear quadrupole moment
0
data de descobèrta1973
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

mass number15
neutron number11
relative atomic mass
15.053490215 ± 0.00017799 Da
g-factor
natural abundance
Radioactivitat☢️ radioactive element
Semivida
790 ± 270 ys
Espin5/2
nuclear quadrupole moment
data de descobèrta2013
parity+

decay modeintensity
n (neutron emission)100%

16Be

mass number16
neutron number12
relative atomic mass
16.061672036 ± 0.00017799 Da
g-factor
0
natural abundance
Radioactivitat☢️ radioactive element
Semivida
650 ± 130 ys
Espin0
nuclear quadrupole moment
0
data de descobèrta2012
parity+

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

istòria

descobridor o inventaireFredrich Wöhler, A.A.Bussy
luòc de descobèrtaGermany/France
data de descobèrta1798
EtimologiaGreek: beryllos, "beryl" (a mineral).
pronunciationbeh-RIL-i-em (English)

source

Abundance
Abundance in Earth's crust
2.8 mg/kg
natural abundance (Ocean)
0.0000056 mg/L
natural abundance (còs uman)
0.00000004 %
natural abundance (meteoroid)
0.0000029 %
natural abundance (Solelh)
0.00000001 %
Abundance in Universe
0.0000001 %

Nuclear Screening Constants

1s0.3152
2s2.088