Bor (B)

grundstof med atomnummer 5

Atomnummer	5
Atommasse	10.81
mass number	11

Gruppe	13
Periode	2
Blok	p

proton	5 p⁺
neutron	6 n⁰
elektron	5 e^-

Fysisk Egenskab

Atomradius	85 pm 205 pm
molar volume	4,6 cm³/mol
Kovalent Radius	85 pm 78 pm 73 pm 84 pm
Metallic Radius	80 pm 98 pm
Ionisk 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
massefylde	2,34 g/cm³ 2.080 kg/m³

Kemisk Egenskab

energi

proton affinity
electron affinity	0,279723 eV/particle
ioniseringsenergi	8,298019 eV/particle 25,15483 eV/particle 37,93058 eV/particle 259,3715 eV/particle 340,226008 eV/particle

Fordampningsvarme	504,5 kJ/mol
smeltevarme	23,6 kJ/mol
standard enthalpy of formation	565 kJ/mol
elektron

Elektronskal	2, 3

Valenselektron	3 ⓘ

electron configuration	[He] 2s² 2p¹ⓘ 1s² 2s² 2p¹

Oxidationstrin	-5, -1, 0, 1, 2, 3
Elektronegativitet	12,13 eV/particle 0.184886 2.04
Electrophilicity Index	1,1470276511768214 eV/particle
fundamental state of matter

stoffase	Fast stof
gaseous state of matter
Kogepunkt	4.273,15 K
Smeltepunkt	2.350,15 K
critical pressure
critical temperature
trippelpunkt
appearance
farve	Sort #00ff00 #ffb5b5 #ffb5b5
appearance	black-brown
Brydningsindeks
materialeegenskab
Varmeledningsevne	27,4 W/(m K)
Termisk ekspansion	0,000006 1/K
molar heat capacity	11,087 J/(mol K)
Varmefylde	1,026 J/(g⋅K)
Adiabateksponenten
electrical properties
type	Insulator
specifik ledningsevne	0,0000000001 MS/m
Elektrisk resistivitet	10.000 Ω*m
superledning
Magnetisme
type	diamagnetic
magnetic susceptibility (Mass)	-0,0000000087 m³/Kg
magnetic susceptibility (Molar)	-0,0000000000941 m³/mol
magnetic susceptibility (Volume)	-0,0000214
magnetic ordering
Curietemperaturen
Néel temperature
struktur
Krystalstruktur	Simpel Trigonal (TET)
lattice constant	8,73 Å
Lattice Angles	1.01334, 1.01334, 1.01334
mechanical property
hårdhed	9,3 MPa 49.000 MPa
Kompressibilitetsmodul	320 GPa
Forskydningsmodul
E-modul
Poissons forhold
speed of sound	16.200 m/s
klassificering
Kategori	Halvmetaller, Metalloids
CAS Group	IIIB
IUPAC Group	IIIA
Glawe Number	86
Mendeleev Number	81
Pettifor Number	86
Geochemical Class
Goldschmidt classification	litophile

øvrige

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
rumgruppe	166 (R_3m)

Isotopes of Boron

Stable Isotopes	2
Unstable Isotopes	14
Natural Isotopes	2

⁶B

mass number	6
neutron number	1
Relative Atomic Mass	6,0508 ± 0,00215 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	2
nuclear quadrupole moment
opdagelsesdato
Paritet	-

decay mode	Intensitet
2p (2-proton emission)

⁷B

mass number	7
neutron number	2
Relative Atomic Mass	7,029712 ± 0,000027 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	570 ± 14 ys
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1967
Paritet	-

decay mode	Intensitet
p (proton emission)	100%

⁸B

mass number	8
neutron number	3
Relative Atomic Mass	8,024607315 ± 0,000001073 Da
g-factor	0,51775 ± 0,00015
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	771,9 ± 0,9 ms
spin	2
nuclear quadrupole moment	0,0643 ± 0,0014
opdagelsesdato	1950
Paritet	+

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

⁹B

mass number	9
neutron number	4
Relative Atomic Mass	9,013329645 ± 0,000000969 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	800 ± 300 zs
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1940
Paritet	-

decay mode	Intensitet
p (proton emission)	100%

¹⁰B

mass number	10
neutron number	5
Relative Atomic Mass	10,012936862 ± 0,000000016 Da
g-factor	0,60015453333333 ± 0,00000026666666666667
natural abundance	19,65 ± 0,44
radioaktivitet	stable isotope
halveringstid	Not Radioactive ☢️
spin	3
nuclear quadrupole moment	0,0846 ± 0,0002
opdagelsesdato	1920
Paritet	+

¹¹B

mass number	11
neutron number	6
Relative Atomic Mass	11,009305166 ± 0,000000013 Da
g-factor	1,792252 ± 0,00000066666666666667
natural abundance	80,35 ± 0,44
radioaktivitet	stable isotope
halveringstid	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0,04059 ± 0,0001
opdagelsesdato	1920
Paritet	-

¹²B

mass number	12
neutron number	7
Relative Atomic Mass	12,014352638 ± 0,000001418 Da
g-factor	1,003 ± 0,001
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	20,2 ± 0,02 ms
spin	1
nuclear quadrupole moment	0,0132 ± 0,0003
opdagelsesdato	1935
Paritet	+

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

¹³B

mass number	13
neutron number	8
Relative Atomic Mass	13,017779981 ± 0,000001073 Da
g-factor	2,1185333333333 ± 0,00033333333333333
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,16 ± 0,18 ms
spin	3/2
nuclear quadrupole moment	0,0365 ± 0,0008
opdagelsesdato	1956
Paritet	-

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

¹⁴B

mass number	14
neutron number	9
Relative Atomic Mass	14,02540401 ± 0,000022773 Da
g-factor	0,5925 ± 0,0025
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	12,36 ± 0,29 ms
spin	2
nuclear quadrupole moment	0,0297 ± 0,0008
opdagelsesdato	1966
Paritet	-

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

¹⁵B

mass number	15
neutron number	10
Relative Atomic Mass	15,031087023 ± 0,000022575 Da
g-factor	1,7726666666667 ± 0,01
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	10,18 ± 0,35 ms
spin	3/2
nuclear quadrupole moment	0,0379 ± 0,0011
opdagelsesdato	1966
Paritet	-

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

¹⁶B

mass number	16
neutron number	11
Relative Atomic Mass	16,039841045 ± 0,000026373 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	0
nuclear quadrupole moment	0
opdagelsesdato	2000
Paritet	-

decay mode	Intensitet
n (neutron emission)

¹⁷B

mass number	17
neutron number	12
Relative Atomic Mass	17,046931399 ± 0,000219114 Da
g-factor	1,7 ± 0,013333333333333
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,08 ± 0,05 ms
spin	3/2
nuclear quadrupole moment	0,0385 ± 0,0015
opdagelsesdato	1973
Paritet	-

decay mode	Intensitet
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

mass number	18
neutron number	13
Relative Atomic Mass	18,055601683 ± 0,00021918 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	2
nuclear quadrupole moment
opdagelsesdato	2010
Paritet	-

decay mode	Intensitet
n (neutron emission)	100%

¹⁹B

mass number	19
neutron number	14
Relative Atomic Mass	19,064166 ± 0,000564 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,92 ± 0,13 ms
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1984
Paritet	-

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

²⁰B

mass number	20
neutron number	15
Relative Atomic Mass	20,074505644 ± 0,000586538 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	1
nuclear quadrupole moment
opdagelsesdato	2018
Paritet	-

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

²¹B

mass number	21
neutron number	16
Relative Atomic Mass	21,084147485 ± 0,00059975 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	3/2
nuclear quadrupole moment
opdagelsesdato	2018
Paritet	-

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

historie

opdager eller opfinder	Sir H. Davy, J.L. Gay-Lussac, L.J. Thénard
fundsted	England/France
opdagelsesdato	1808
etymologi	From Arabic and Persian words for borax.
udtale	BO-ron (engelsk)

source

Forekomst
Abundance in Earth's crust	10 mg/kg
natural abundance (verdenshave)	4,44 mg/L
natural abundance (menneskelige krop)	0,00007 %
natural abundance (Meteoroid)	0,00016 %
natural abundance (Solen)	0,0000002 %
Abundance in Universe	0,0000001 %

Nuclear Screening Constants

1	s	0.3205
2	p	2.5786
2	s	2.4238

Bor on ChemicalAid

AGROVOC ID	c_1018
AUT NKC	ph118964
Art & Architecture Thesaurus ID	300264228
Australian Educational Vocabulary ID	scot/2755
BNCF	31249
BNF	12140810z
Brockhaus Enzyklopädie online ID	bor-30
CAS-nummer	7440-42-8
ChEBI-ID	27560
ChemSpider ID	4575371
DSSTOX compound identifier	DTXCID503922
DSSTox substance ID	DTXSID3023922
Drugbank-ID	11203
ECHA Substance Infocard ID	100.028.319
Enciclopedia Treccani	boro
Encyclopædia Britannica Online-ID	science/boron-chemical-element
Encyclopædia Universalis-ID	bore
Freebase-ID	/m/025svlc
French Vikidia ID	Bore
GND-identifikator	4007709-3
HSDB-ID	4482
InChI	InChI=1S/B
InChIKey	ZOXJGFHDIHLPTG-UHFFFAOYSA-N
Italian Vikidia ID	Boro
KBpedia ID	Boron
KEGG-ID	C06266
LCAuth	sh85015871
LNB id	000310483
Latvian National Encyclopedia Online ID	89038
MeSH ID	D001895
Mindat mineral ID	43412
NDF-RT ID	N0000148267
NDL-nummer	00563492
Namuwiki ID	붕소
National Library of Israel J9U ID	987007283095205171
OmegaWiki-betydningsdefinition	420
OpenAlex ID	C501308230
PSH-ID	5791
Pixiv Encyclopedia ID	ホウ素
Probes And Drugs ID	PD143904
PubChem CID	5462311
Quora emne-ID	Boron
RxNorm ID	1705
Spanish Vikidia ID	Boro
Store katalanske encyklopædi-ID	0085405
Store norske leksikon-ID	bor_-_grunnstoff
Store russiske encyklopædi Online-ID	1878022
UK Parliament thesaurus ID	8744
UMLS CUI	C0006030
UNII	N9E3X5056Q
USGS Thesaurus ID	1412
WordNet 3.1 Synset ID	14656049-n
YSO ID	7591
ZVG-nummer	8030

Bor (B)

Fysisk Egenskab

Kemisk Egenskab

øvrige

Isotopes of Boron

6B

7B

8B

9B

10B

11B

12B

13B

14B

15B

16B

17B

18B

19B

20B

21B

historie

source

Nuclear Screening Constants

⁶B

⁷B

⁸B

⁹B

¹⁰B

¹¹B

¹²B

¹³B

¹⁴B

¹⁵B

¹⁶B

¹⁷B

¹⁸B

¹⁹B

²⁰B

²¹B