Бериллий

Бериллий (Be)

chemical element with symbol Be and atomic number 4
Atomic Number4
Atomic Weight9.0121831
Адади массавӣ9
Group2
Period2
Blocks
proton4 p+
neutron5 n0
electron4 e-
Animated Bohr model of Be (Бериллий)

Хусусияти Физикӣ

Atomic Radius
105 pm
molar volume
covalent radius
102 pm
Metallic Radius
89 pm
ionic radius
16 pm
Crystal Radius
30 pm
Van der Waals radius
153 pm
зичӣ
1,85 g/cm³
Atomic Radii Of The Elements: Бериллий0102030405060708090100110120130140150160pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

энергия
proton affinity
electron affinity
ionization energy
9,322699 eV/particle
ionization energy of Be (Бериллий)
enthalpy of vaporization
309 kJ/mol
гармои гудозиш
12,21 kJ/mol
standard enthalpy of formation
324 kJ/mol
electron
Абри электронӣ2, 2
Bohr model: Be (Бериллий)
valence electron2
Lewis structure: Be (Бериллий)
electron configuration[He] 2s2
1s2 2s2
Enhanced Bohr model of Be (Бериллий)
Orbital Diagram of Be (Бериллий)
oxidation number0, 1, 2
electronegativity
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
Ранг
Slate Gray
appearancewhite-gray metallic
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000113 1/K
molar heat capacity
16,443 J/(mol K)
Specific Heat Capacity
heat capacity ratio
electrical properties
навъConductor
electrical conductivity
25 MS/m
electrical resistivity
0,00000003999999999998 m Ω
superconductivity
0,026 K
magnetism
навъdiamagnetic
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
сохт
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2,29 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
5,5 MPa
bulk modulus
130 GPa
shear modulus
132 GPa
Young's modulus
287 GPa
Poisson's ratio
0,032
speed of sound
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
ададҳои квантӣ1S0
space group194 (P63/mmc)

Isotopes of Beryllium

Stable Isotopes1
Unstable Isotopes11
Natural Isotopes1

5Be

Адади массавӣ5
neutron number1
relative atomic mass
5,03987 ± 0,00215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
таърихи кашф
parity+

decay modeintensity
p (proton emission)

6Be

Адади массавӣ6
neutron number2
relative atomic mass
6,019726409 ± 0,000005848 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
5 ± 0,3 zs
spin0
nuclear quadrupole moment
0
таърихи кашф1958
parity+

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

7Be

Адади массавӣ7
neutron number3
relative atomic mass
7,016928714 ± 0,000000076 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
53,22 ± 0,06 d
spin3/2
nuclear quadrupole moment
таърихи кашф1938
parity-

decay modeintensity
ϵ (electron capture)100%

8Be

Адади массавӣ8
neutron number4
relative atomic mass
8,005305102 ± 0,000000037 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
81,9 ± 3,7 as
spin0
nuclear quadrupole moment
0
таърихи кашф1932
parity+

decay modeintensity
α (α emission)100%

9Be

Адади массавӣ9
neutron number5
relative atomic mass
9,012183062 ± 0,000000082 Da
g-factor
-0,78495333333333 ± 0,0000033333333333333
natural abundance
100
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
0,0529 ± 0,0004
таърихи кашф1921
parity-

10Be

Адади массавӣ10
neutron number6
relative atomic mass
10,013534692 ± 0,000000086 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1,387 ± 0,012 My
spin0
nuclear quadrupole moment
0
таърихи кашф1935
parity+

decay modeintensity
β (β decay)100%

11Be

Адади массавӣ11
neutron number7
relative atomic mass
11,02166108 ± 0,000000255 Da
g-factor
-3,3632 ± 0,0016
natural abundance
radioactivity☢️ radioactive element
half-life
13,76 ± 0,07 s
spin1/2
nuclear quadrupole moment
0
таърихи кашф1958
parity+

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

12Be

Адади массавӣ12
neutron number8
relative atomic mass
12,026922082 ± 0,000002048 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
21,46 ± 0,05 ms
spin0
nuclear quadrupole moment
0
таърихи кашф1966
parity+

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

13Be

Адади массавӣ13
neutron number9
relative atomic mass
13,036134506 ± 0,000010929 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1 ± 0,7 zs
spin1/2
nuclear quadrupole moment
0
таърихи кашф1983
parity-

decay modeintensity
n (neutron emission)

14Be

Адади массавӣ14
neutron number10
relative atomic mass
14,04289292 ± 0,00014197 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,53 ± 0,27 ms
spin0
nuclear quadrupole moment
0
таърихи кашф1973
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

Адади массавӣ15
neutron number11
relative atomic mass
15,053490215 ± 0,00017799 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
790 ± 270 ys
spin5/2
nuclear quadrupole moment
таърихи кашф2013
parity+

decay modeintensity
n (neutron emission)100%

16Be

Адади массавӣ16
neutron number12
relative atomic mass
16,061672036 ± 0,00017799 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
650 ± 130 ys
spin0
nuclear quadrupole moment
0
таърихи кашф2012
parity+

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

таърих

кошифFredrich Wöhler, A.A.Bussy
макони кашфGermany/France
таърихи кашф1798
РешашиносӣGreek: beryllos, "beryl" (a mineral).
pronunciationbeh-RIL-i-em (Англисӣ)

source

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

Nuclear Screening Constants

1s0.3152
2s2.088