Бор

Бор (B)

chemical element with symbol B and atomic number 5
Atomic Number5
Atomic Weight10.81
mass number11
Group13
Period2
Blockp
Протон5 p+
Нейтрон6 n0
Электрон5 e-
Animated Bohr model of B (Бор)

Physical Property

Атомдук Радиус
molar volume
covalent radius
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density
Atomic Radii Of The Elements: Бор0102030405060708090100110120130140150160170180190200pmАтомдук РадиусCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

энергия
proton affinity
electron affinity
ionization energy
ionization energy of B (Бор)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Электрон
electron shell2, 3
Bohr model: B (Бор)
valence electron3
Lewis structure: B (Бор)
electron configuration[He] 2s2 2p1
1s2 2s2 2p1
Enhanced Bohr model of B (Бор)
Orbital Diagram of B (Бор)
oxidation number-5, -1, 0, 1, 2, 3
electronegativity
2.04
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
Түс –
Black
appearanceblack-brown
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeInsulator
electrical conductivity
electrical resistivity
superconductivity
Магнетизм
typediamagnetic
magnetic susceptibility (Mass)
-0,0000000087 m³/Kg
magnetic susceptibility (Molar)
-0,0000000000941 m³/mol
magnetic susceptibility (Volume)
-0,0000214
magnetic ordering
Curie temperature
Néel temperature
түзүм
Crystal StructureSimple Trigonal (TET)
lattice constant
Lattice Angles1.01334, 1.01334, 1.01334
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryMetalloids, Metalloids
CAS GroupIIIB
IUPAC GroupIIIA
Glawe Number86
Mendeleev Number81
Pettifor Number86
Geochemical Class
Литофиль элементтериlitophile

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotropeAlpha Rhombohedral Boron, Beta Rhombohedral Boron, Alpha Tetragonal Boron
Neutron cross section
760
Neutron Mass Absorption
2,4
Кванттык сандар2P1/2
space group166 (R_3m)

Isotopes of Boron

Stable Isotopes2
Unstable Isotopes14
Natural Isotopes2
Isotopic Composition1180.35%1180.35%1019.65%1019.65%

6B

mass number6
neutron number1
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
Спин2
nuclear quadrupole moment
time of discovery or invention
parity-

decay modeintensity
2p (2-proton emission)

7B

mass number7
neutron number2
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
570 ± 14 ys
Спин3/2
nuclear quadrupole moment
time of discovery or invention1967
parity-

decay modeintensity
p (proton emission)100%

8B

mass number8
neutron number3
Relative Atomic Mass
g-factor
0,51775 ± 0,00015
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
771,9 ± 0,9 ms
Спин2
nuclear quadrupole moment
0,0643 ± 0,0014
time of discovery or invention1950
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+α (β+-delayed α emission)100%

9B

mass number9
neutron number4
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
800 ± 300 zs
Спин3/2
nuclear quadrupole moment
time of discovery or invention1940
parity-

decay modeintensity
p (proton emission)100%

10B

mass number10
neutron number5
Relative Atomic Mass
g-factor
0,60015453333333 ± 0,00000026666666666667
natural abundance
19,65 ± 0,44
Радиоактивдүүлүкstable isotope
half-lifeNot Radioactive ☢️
Спин3
nuclear quadrupole moment
0,0846 ± 0,0002
time of discovery or invention1920
parity+

11B

mass number11
neutron number6
Relative Atomic Mass
g-factor
1,792252 ± 0,00000066666666666667
natural abundance
80,35 ± 0,44
Радиоактивдүүлүкstable isotope
half-lifeNot Radioactive ☢️
Спин3/2
nuclear quadrupole moment
0,04059 ± 0,0001
time of discovery or invention1920
parity-

12B

mass number12
neutron number7
Relative Atomic Mass
g-factor
1,003 ± 0,001
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
20,2 ± 0,02 ms
Спин1
nuclear quadrupole moment
0,0132 ± 0,0003
time of discovery or invention1935
parity+

decay modeintensity
β (β decay)100%
βα (β-delayed α emission)0.6%

13B

mass number13
neutron number8
Relative Atomic Mass
g-factor
2,1185333333333 ± 0,00033333333333333
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
17,16 ± 0,18 ms
Спин3/2
nuclear quadrupole moment
0,0365 ± 0,0008
time of discovery or invention1956
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.266%

14B

mass number14
neutron number9
Relative Atomic Mass
g-factor
0,5925 ± 0,0025
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
12,36 ± 0,29 ms
Спин2
nuclear quadrupole moment
0,0297 ± 0,0008
time of discovery or invention1966
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)6.04%
2n (2-neutron emission)

15B

mass number15
neutron number10
Relative Atomic Mass
g-factor
1,7726666666667 ± 0,01
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
10,18 ± 0,35 ms
Спин3/2
nuclear quadrupole moment
0,0379 ± 0,0011
time of discovery or invention1966
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)98.7%
2n (2-neutron emission)1.5%

16B

mass number16
neutron number11
Relative Atomic Mass
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
Спин0
nuclear quadrupole moment
0
time of discovery or invention2000
parity-

decay modeintensity
n (neutron emission)

17B

mass number17
neutron number12
Relative Atomic Mass
g-factor
1,7 ± 0,013333333333333
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
5,08 ± 0,05 ms
Спин3/2
nuclear quadrupole moment
0,0385 ± 0,0015
time of discovery or invention1973
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)63%
2n (2-neutron emission)12%
3n (3-neutron emission)3.5%
4n0.4%

18B

mass number18
neutron number13
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
Спин2
nuclear quadrupole moment
time of discovery or invention2010
parity-

decay modeintensity
n (neutron emission)100%

19B

mass number19
neutron number14
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
2,92 ± 0,13 ms
Спин3/2
nuclear quadrupole moment
time of discovery or invention1984
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)71%
2n (2-neutron emission)17%
3n (3-neutron emission)9.1%

20B

mass number20
neutron number15
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
Спин1
nuclear quadrupole moment
time of discovery or invention2018
parity-

decay modeintensity
n (neutron emission)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

21B

mass number21
neutron number16
Relative Atomic Mass
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
Спин3/2
nuclear quadrupole moment
time of discovery or invention2018
parity-

decay modeintensity
2n (2-neutron emission)100%
Boron
Electron shell 005 Boron

тарых

discoverer or inventorSir H. Davy, J.L. Gay-Lussac, L.J. Thénard
location of discoveryEngland/France
time of discovery or invention1808
ЭтимологияFrom Arabic and Persian words for borax.
pronunciationBO-ron (англисче)

source

Abundance
Abundance in Earth's crust
natural abundance (Океан)
natural abundance (human body)
0,00007 %
natural abundance (meteoroid)
0,00016 %
natural abundance (Күн)
0,0000002 %
Abundance in Universe
0,0000001 %

Nuclear Screening Constants

1s0.3205
2p2.5786
2s2.4238