Bors (B)

ķīmiskais elements

Atomic Number	5
Atomic Weight	10.81
Masas skaitlis	11

Group	13
Period	2
Block	p

protons	5 p⁺
neitrons	6 n⁰
elektrons	5 e^-

Animated Bora atoma struktūras modelis of B (Bors)

Fizikāla Īpašība

Atoma Rādiuss	85 pm 205 pm
molar volume	4,6 cm³/mol
Covalent Radius	85 pm 78 pm 73 pm 84 pm
Metallic Radius	80 pm 98 pm
ionic radius	1 pm 11 pm 27 pm
Crystal Radius	15 pm 25 pm 41 pm
Van der Waals radius	180 pm 402 pm 192 pm 215 pm 192 pm 408,3 pm
blīvums	2,34 g/cm³ 2 080 kg/m³

Chemical Property

{ERROR}

enerģija

proton affinity
Elektrontieksme	0,279723 eV/particle
jonizācijas potenciāls	8,298019 eV/particle 25,15483 eV/particle 37,93058 eV/particle 259,3715 eV/particle 340,226008 eV/particle

enthalpy of vaporization	504,5 kJ/mol
enthalpy of fusion	23,6 kJ/mol
standard enthalpy of formation	565 kJ/mol
elektrons

electron shell	2, 3

vērtības elektrons	3 ⓘ

elektronu konfigurācija	[He] 2s² 2p¹ⓘ 1s² 2s² 2p¹

Oksidēšanas pakāpe	-5, -1, 0, 1, 2, 3
elektronegativitāte	12,13 eV/particle 0.184886 2.04
Electrophilicity Index	1,1470276511768214 eV/particle
fundamentālais agregātstāvoklis

agregātstāvoklis
gaseous state of matter
Boiling Point	4 273,15 K
Melting Point	2 350,15 K
critical pressure
critical temperature
trīskāršais punkts
appearance
krāsa	Black #00ff00 #ffb5b5 #ffb5b5
appearance	black-brown
Laušanas koeficients
thermodynamic material property
Thermal Conductivity	27,4 W/(m K)
Termiskā izplešanās	0,000006 1/K
Molārā siltumietilpība	11,087 J/(mol K)
Specific Heat Capacity	1,026 J/(g⋅K)
heat capacity ratio
electrical properties
type	Insulator
electrical conductivity	0,0000000001 MS/m
īpatnējā pretestība	10 000 Ω*m
Supravadītspēja
Magnētisms
type	diamagnetic
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
struktūra
Crystal Structure	{ERROR}
lattice constant	8,73 Å
Lattice Angles	1.01334, 1.01334, 1.01334
mechanical property
Cietība	9,3 MPa 49 000 MPa
tilpuma elastības modulis	320 GPa
shear modulus
Junga modulis
Poisson's ratio
skaņas ātrums	16 200 m/s
klasifikācija
Category	Actinides, Metalloids
CAS Group	IIIB
IUPAC Group	IIIA
Glawe Number	86
Mendeleev Number	81
Pettifor Number	86
Geochemical Class
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	20,5 ± 0,1 a₀
C6 Dispersion Coefficient	99,5 a₀ 99,2 a₀
allotrope	Alpha Rhombohedral Boron, Beta Rhombohedral Boron, Alpha Tetragonal Boron
Neutron cross section	760
Neutron Mass Absorption	2,4
quantum number	2P1/2
space group	166 (R_3m)

Isotopes of Boron

Stable Isotopes	2
Unstable Isotopes	14
Natural Isotopes	2

⁶B

Masas skaitlis	6
neutron number	1
Relative Atomic Mass	6,0508 ± 0,00215 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	2
nuclear quadrupole moment
atklāšanas datums
parity	-

decay mode	intensity
2p (2-proton emission)

⁷B

Masas skaitlis	7
neutron number	2
Relative Atomic Mass	7,029712 ± 0,000027 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	570 ± 14 ys
spins	3/2
nuclear quadrupole moment
atklāšanas datums	1967
parity	-

decay mode	intensity
p (proton emission)	100%

⁸B

Masas skaitlis	8
neutron number	3
Relative Atomic Mass	8,024607315 ± 0,000001073 Da
g-factor	0,51775 ± 0,00015
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	771,9 ± 0,9 ms
spins	2
nuclear quadrupole moment	0,0643 ± 0,0014
atklāšanas datums	1950
parity	+

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

⁹B

Masas skaitlis	9
neutron number	4
Relative Atomic Mass	9,013329645 ± 0,000000969 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	800 ± 300 zs
spins	3/2
nuclear quadrupole moment
atklāšanas datums	1940
parity	-

decay mode	intensity
p (proton emission)	100%

¹⁰B

Masas skaitlis	10
neutron number	5
Relative Atomic Mass	10,012936862 ± 0,000000016 Da
g-factor	0,60015453333333 ± 0,00000026666666666667
natural abundance	19,65 ± 0,44
radioaktivitāte	stable isotope
Pussabrukšanas periods	Not Radioactive ☢️
spins	3
nuclear quadrupole moment	0,0846 ± 0,0002
atklāšanas datums	1920
parity	+

¹¹B

Masas skaitlis	11
neutron number	6
Relative Atomic Mass	11,009305166 ± 0,000000013 Da
g-factor	1,792252 ± 0,00000066666666666667
natural abundance	80,35 ± 0,44
radioaktivitāte	stable isotope
Pussabrukšanas periods	Not Radioactive ☢️
spins	3/2
nuclear quadrupole moment	0,04059 ± 0,0001
atklāšanas datums	1920
parity	-

¹²B

Masas skaitlis	12
neutron number	7
Relative Atomic Mass	12,014352638 ± 0,000001418 Da
g-factor	1,003 ± 0,001
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	20,2 ± 0,02 ms
spins	1
nuclear quadrupole moment	0,0132 ± 0,0003
atklāšanas datums	1935
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻α (β⁻-delayed α emission)	0.6%

¹³B

Masas skaitlis	13
neutron number	8
Relative Atomic Mass	13,017779981 ± 0,000001073 Da
g-factor	2,1185333333333 ± 0,00033333333333333
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	17,16 ± 0,18 ms
spins	3/2
nuclear quadrupole moment	0,0365 ± 0,0008
atklāšanas datums	1956
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.266%

¹⁴B

Masas skaitlis	14
neutron number	9
Relative Atomic Mass	14,02540401 ± 0,000022773 Da
g-factor	0,5925 ± 0,0025
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	12,36 ± 0,29 ms
spins	2
nuclear quadrupole moment	0,0297 ± 0,0008
atklāšanas datums	1966
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	6.04%
2n (2-neutron emission)

¹⁵B

Masas skaitlis	15
neutron number	10
Relative Atomic Mass	15,031087023 ± 0,000022575 Da
g-factor	1,7726666666667 ± 0,01
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	10,18 ± 0,35 ms
spins	3/2
nuclear quadrupole moment	0,0379 ± 0,0011
atklāšanas datums	1966
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	98.7%
2n (2-neutron emission)	1.5%

¹⁶B

Masas skaitlis	16
neutron number	11
Relative Atomic Mass	16,039841045 ± 0,000026373 Da
g-factor	0
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	0
nuclear quadrupole moment	0
atklāšanas datums	2000
parity	-

decay mode	intensity
n (neutron emission)

¹⁷B

Masas skaitlis	17
neutron number	12
Relative Atomic Mass	17,046931399 ± 0,000219114 Da
g-factor	1,7 ± 0,013333333333333
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	5,08 ± 0,05 ms
spins	3/2
nuclear quadrupole moment	0,0385 ± 0,0015
atklāšanas datums	1973
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	63%
2n (2-neutron emission)	12%
3n (3-neutron emission)	3.5%
4n	0.4%

¹⁸B

Masas skaitlis	18
neutron number	13
Relative Atomic Mass	18,055601683 ± 0,00021918 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	2
nuclear quadrupole moment
atklāšanas datums	2010
parity	-

decay mode	intensity
n (neutron emission)	100%

¹⁹B

Masas skaitlis	19
neutron number	14
Relative Atomic Mass	19,064166 ± 0,000564 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods	2,92 ± 0,13 ms
spins	3/2
nuclear quadrupole moment
atklāšanas datums	1984
parity	-

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

²⁰B

Masas skaitlis	20
neutron number	15
Relative Atomic Mass	20,074505644 ± 0,000586538 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	1
nuclear quadrupole moment
atklāšanas datums	2018
parity	-

decay mode	intensity
n (neutron emission)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

²¹B

Masas skaitlis	21
neutron number	16
Relative Atomic Mass	21,084147485 ± 0,00059975 Da
g-factor
natural abundance
radioaktivitāte	☢️ radioactive element
Pussabrukšanas periods
spins	3/2
nuclear quadrupole moment
atklāšanas datums	2018
parity	-

decay mode	intensity
2n (2-neutron emission)	100%

vēsture

atklājējs vai izgudrotājs	Sir H. Davy, J.L. Gay-Lussac, L.J. Thénard
atraduma atrašanās vieta	England/France
atklāšanas datums	1808
Etimoloģija	From Arabic and Persian words for borax.
izruna	BO-ron (angļu)

avots

Abundance
Abundance in Earth's crust	10 mg/kg
natural abundance (okeāns)	4,44 mg/L
natural abundance (cilvēka ķermenis)	0,00007 %
natural abundance (meteoroīds)	0,00016 %
natural abundance (Saule)	0,0000002 %
Abundance in Universe	0,0000001 %

Nuclear Screening Constants

1	s	0.3205
2	p	2.5786
2	s	2.4238

Bors on ChemicalAid

Bors (B)

Fizikāla Īpašība

Chemical Property

other

Isotopes of Boron

6B

7B

8B

9B

10B

11B

12B

13B

14B

15B

16B

17B

18B

19B

20B

21B

vēsture

avots

Nuclear Screening Constants

⁶B

⁷B

⁸B

⁹B

¹⁰B

¹¹B

¹²B

¹³B

¹⁴B

¹⁵B

¹⁶B

¹⁷B

¹⁸B

¹⁹B

²⁰B

²¹B