Berilium

Berilium (Be)

chemical element with symbol Be and atomic number 4
Atomic Number4
Atomic Weight9.0121831
Numri i masës9
Group2
Period2
Blocks
protoni4 p+
neutroni5 n0
elektroni4 e-
Animated Bohr model of Be (Berilium)

Tipar Fizik

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
density
1,85 g/cm³
Atomic Radii Of The Elements: Berilium0102030405060708090100110120130140150160pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energjia
proton affinity
electron affinity
ionization energy
9,322699 eV/particle
ionization energy of Be (Berilium)
enthalpy of vaporization
309 kJ/mol
enthalpy of fusion
12,21 kJ/mol
standard enthalpy of formation
324 kJ/mol
elektroni
electron shell2, 2
Bohr model: Be (Berilium)
valence electron2
Lewis structure: Be (Berilium)
konfigurimi i elektronit[He] 2s2
1s2 2s2
Enhanced Bohr model of Be (Berilium)
Orbital Diagram of Be (Berilium)
oxidation number0, 1, 2
Elektronegativiteti
1.57
Electrophilicity Index
0,5110145863657444 eV/particle
fundamental state of matter
gjendja agregate e materiesSolid
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
Ngjyra
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
1,825 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
25 MS/m
electrical resistivity
0,00000003999999999998 m Ω
Superpërcjellshmëria
0,026 K
Magnetizimi
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
strukturë
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
Shpejtësia e zërit
13 000 m/s
klasifikim
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
numër kuantik1S0
space group194 (P63/mmc)

Isotopes of Beryllium

Stable Isotopes1
Unstable Isotopes11
Natural Isotopes1

5Be

Numri i masës5
numri i neutroneve1
relative atomic mass
5,03987 ± 0,00215 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes
parity+

decay modeintensitet
p (proton emission)

6Be

Numri i masës6
numri i neutroneve2
relative atomic mass
6,019726409 ± 0,000005848 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
5 ± 0,3 zs
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1958
parity+

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

7Be

Numri i masës7
numri i neutroneve3
relative atomic mass
7,016928714 ± 0,000000076 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
53,22 ± 0,06 d
Spini3/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1938
parity-

decay modeintensitet
ϵ (electron capture)100%

8Be

Numri i masës8
numri i neutroneve4
relative atomic mass
8,005305102 ± 0,000000037 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
81,9 ± 3,7 as
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1932
parity+

decay modeintensitet
α (α emission)100%

9Be

Numri i masës9
numri i neutroneve5
relative atomic mass
9,012183062 ± 0,000000082 Da
g-factor
-0,78495333333333 ± 0,0000033333333333333
natural abundance
100
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini3/2
nuclear quadrupole moment
0,0529 ± 0,0004
koha e zbulimit apo shpikjes1921
parity-

10Be

Numri i masës10
numri i neutroneve6
relative atomic mass
10,013534692 ± 0,000000086 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
1,387 ± 0,012 My
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1935
parity+

decay modeintensitet
β (β decay)100%

11Be

Numri i masës11
numri i neutroneve7
relative atomic mass
11,02166108 ± 0,000000255 Da
g-factor
-3,3632 ± 0,0016
natural abundance
Radioaktivitet☢️ radioactive element
half-life
13,76 ± 0,07 s
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1958
parity+

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

12Be

Numri i masës12
numri i neutroneve8
relative atomic mass
12,026922082 ± 0,000002048 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
21,46 ± 0,05 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1966
parity+

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

13Be

Numri i masës13
numri i neutroneve9
relative atomic mass
13,036134506 ± 0,000010929 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
1 ± 0,7 zs
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1983
parity-

decay modeintensitet
n (neutron emission)

14Be

Numri i masës14
numri i neutroneve10
relative atomic mass
14,04289292 ± 0,00014197 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
4,53 ± 0,27 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1973
parity+

decay modeintensitet
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

Numri i masës15
numri i neutroneve11
relative atomic mass
15,053490215 ± 0,00017799 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
790 ± 270 ys
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes2013
parity+

decay modeintensitet
n (neutron emission)100%

16Be

Numri i masës16
numri i neutroneve12
relative atomic mass
16,061672036 ± 0,00017799 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
650 ± 130 ys
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes2012
parity+

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

historia

zbuluesFredrich Wöhler, A.A.Bussy
vendndodhja e zbulimitGermany/France
koha e zbulimit apo shpikjes1798
EtimologjiaGreek: beryllos, "beryl" (a mineral).
pronunciationbeh-RIL-i-em (anglisht)

burim

Abundance
Abundance in Earth's crust
2,8 mg/kg
natural abundance (Oqeani)
0,0000056 mg/L
natural abundance (Trupi i njeriut)
0,00000004 %
natural abundance (meteoroid)
0,0000029 %
natural abundance (Diell)
0,00000001 %
Abundance in Universe
0,0000001 %

Nuclear Screening Constants

1s0.3152
2s2.088