Boron

Boron (B)

chemical element with symbol B and atomic number 5
Atomic Number5
Atomic Weight10.81
Nombor jisim11
Group13
Period2
Blockp
proton5 p+
neutron6 n0
Elektron5 e-
Animated Model Bohr of B (Boron)

Sifat Fizikal

Jejari Atom
molar volume
Jejari kovalen
Metallic Radius
ionic radius
Crystal Radius
Jejari van der Waals
ketumpatan
Atomic Radii Of The Elements: Boron0102030405060708090100110120130140150160170180190200pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
Pertalian elektron
ionization energy
ionization energy of B (Boron)
Entalpi pengewapan
entalpi pelakuran
standard enthalpy of formation
Elektron
Petala elektron2, 3
Model Bohr: B (Boron)
Elektron valens3
Teori ion Lewis: B (Boron)
tatarajah elektron[He] 2s2 2p1
1s2 2s2 2p1
Enhanced Model Bohr of B (Boron)
Orbital Diagram of B (Boron)
Keadaan pengoksidaan-5, -1, 0, 1, 2, 3
Keelektronegatifan
2.04
Electrophilicity Index
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
rupa
warna
Black
rupablack-brown
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeInsulator
Kekonduksian elektrik
Kerintangan dan kekonduksian elektrik
Kesuperkonduksian
kemagnetan
typediamagnetic
magnetic susceptibility (Mass)
-0.0000000087 m³/Kg
magnetic susceptibility (Molar)
-0.0000000000941 m³/mol
magnetic susceptibility (Volume)
-0.0000214
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureSimple Trigonal (TET)
lattice constant
Lattice Angles1.01334, 1.01334, 1.01334
mechanical property
hardness
Modulus pukal
shear modulus
Young's modulus
Nisbah Poisson
Kelajuan bunyi
pengelasan
CategoryMetalloids, Metalloids
CAS GroupIIIB
IUPAC GroupIIIA
Glawe Number86
Mendeleev Number81
Pettifor Number86
Geochemical Class
Goldschmidt classificationlitophile

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
Nombor kuantum2P1/2
space group166 (R_3m)

Isotopes of Boron

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

6B

Nombor jisim6
nombor neutron1
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin2
nuclear quadrupole moment
tarikh penemuan
parity-

decay modeKeamatan (fizik)
2p (2-proton emission)

7B

Nombor jisim7
nombor neutron2
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
570 ± 14 ys
Spin3/2
nuclear quadrupole moment
tarikh penemuan1967
parity-

decay modeKeamatan (fizik)
p (proton emission)100%

8B

Nombor jisim8
nombor neutron3
Jisim Atom Relatif
g-factor
0.51775 ± 0.00015
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
771.9 ± 0.9 ms
Spin2
nuclear quadrupole moment
0.0643 ± 0.0014
tarikh penemuan1950
parity+

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

9B

Nombor jisim9
nombor neutron4
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
800 ± 300 zs
Spin3/2
nuclear quadrupole moment
tarikh penemuan1940
parity-

decay modeKeamatan (fizik)
p (proton emission)100%

10B

Nombor jisim10
nombor neutron5
Jisim Atom Relatif
g-factor
0.60015453333333 ± 0.00000026666666666667
natural abundance
19.65 ± 0.44
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin3
nuclear quadrupole moment
0.0846 ± 0.0002
tarikh penemuan1920
parity+

11B

Nombor jisim11
nombor neutron6
Jisim Atom Relatif
g-factor
1.792252 ± 0.00000066666666666667
natural abundance
80.35 ± 0.44
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin3/2
nuclear quadrupole moment
0.04059 ± 0.0001
tarikh penemuan1920
parity-

12B

Nombor jisim12
nombor neutron7
Jisim Atom Relatif
g-factor
1.003 ± 0.001
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
20.2 ± 0.02 ms
Spin1
nuclear quadrupole moment
0.0132 ± 0.0003
tarikh penemuan1935
parity+

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

13B

Nombor jisim13
nombor neutron8
Jisim Atom Relatif
g-factor
2.1185333333333 ± 0.00033333333333333
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
17.16 ± 0.18 ms
Spin3/2
nuclear quadrupole moment
0.0365 ± 0.0008
tarikh penemuan1956
parity-

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

14B

Nombor jisim14
nombor neutron9
Jisim Atom Relatif
g-factor
0.5925 ± 0.0025
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
12.36 ± 0.29 ms
Spin2
nuclear quadrupole moment
0.0297 ± 0.0008
tarikh penemuan1966
parity-

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

15B

Nombor jisim15
nombor neutron10
Jisim Atom Relatif
g-factor
1.7726666666667 ± 0.01
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
10.18 ± 0.35 ms
Spin3/2
nuclear quadrupole moment
0.0379 ± 0.0011
tarikh penemuan1966
parity-

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

16B

Nombor jisim16
nombor neutron11
Jisim Atom Relatif
g-factor
0
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin0
nuclear quadrupole moment
0
tarikh penemuan2000
parity-

decay modeKeamatan (fizik)
n (neutron emission)

17B

Nombor jisim17
nombor neutron12
Jisim Atom Relatif
g-factor
1.7 ± 0.013333333333333
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.08 ± 0.05 ms
Spin3/2
nuclear quadrupole moment
0.0385 ± 0.0015
tarikh penemuan1973
parity-

decay modeKeamatan (fizik)
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

Nombor jisim18
nombor neutron13
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin2
nuclear quadrupole moment
tarikh penemuan2010
parity-

decay modeKeamatan (fizik)
n (neutron emission)100%

19B

Nombor jisim19
nombor neutron14
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.92 ± 0.13 ms
Spin3/2
nuclear quadrupole moment
tarikh penemuan1984
parity-

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

20B

Nombor jisim20
nombor neutron15
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin1
nuclear quadrupole moment
tarikh penemuan2018
parity-

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

21B

Nombor jisim21
nombor neutron16
Jisim Atom Relatif
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin3/2
nuclear quadrupole moment
tarikh penemuan2018
parity-

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

sejarah

penemu atau perekaSir H. Davy, J.L. Gay-Lussac, L.J. Thénard
tempat penemuanEngland/France
tarikh penemuan1808
EtimologiFrom Arabic and Persian words for borax.
sebutanBO-ron (Inggeris)

sumber

Abundance
Abundance in Earth's crust
natural abundance (lautan)
natural abundance (Tubuh manusia)
0.00007 %
natural abundance (Meteoroid)
0.00016 %
natural abundance (Matahari)
0.0000002 %
Abundance in Universe
0.0000001 %

Nuclear Screening Constants

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