Boor (B)

chemical element with symbol B and atomic number 5

Atomic Number	5
Atomic Weight	10.81
Massagetal	11

Group	13
Period	2
Block	p

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

Physical Property

Atoomradius	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
Ioonradius	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
density	2,34 g/cm³ 2 080 kg/m³

Chemical Property

energie

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

Verdampingswarmte	504,5 kJ/mol
smeltingswarmte	23,6 kJ/mol
Vormingsentalpie	565 kJ/mol
elektron

Elektronskil	2, 3

Valenselektrone	3 ⓘ

elektronkonfigurasie	[He] 2s² 2p¹ⓘ 1s² 2s² 2p¹

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

phase of matter	Solid
gaseous state of matter
Boiling Point	4 273,15 K
Melting Point	2 350,15 K
critical pressure
critical temperature
triple point
appearance
kleur	Black #00ff00 #ffb5b5 #ffb5b5
appearance	black-brown
Brekingsindeks
thermodynamic material property
Thermal Conductivity	27,4 W/(m K)
thermal expansion	0,000006 1/K
molar heat capacity	11,087 J/(mol K)
Specific Heat Capacity	1,026 J/(g⋅K)
heat capacity ratio
electrical properties
type	Insulator
Geleidingsvermoë	0,0000000001 MS/m
Elektriese resistiwiteit	10 000 Ω*m
superconductivity
Magnetisme
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
structure
Crystal Structure	Simple Trigonal (TET)
lattice constant	8,73 Å
Lattice Angles	1.01334, 1.01334, 1.01334
mechanical property
hardness	9,3 MPa 49 000 MPa
Massamodulus	320 GPa
Skuifmodulus
Young se modulus
Poisson se verhouding
Spoed van klank	16 200 m/s
classification
Category	Metalloids, 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
Ruimtegroep	166 (R_3m)

Isotopes of Boron

Stable Isotopes	2
Unstable Isotopes	14
Natural Isotopes	2

⁶B

Massagetal	6
neutron number	1
Relative Atomic Mass	6,0508 ± 0,00215 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	2
nuclear quadrupole moment
ontdekkingsdatum
parity	-

decay mode	intensity
2p (2-proton emission)

⁷B

Massagetal	7
neutron number	2
Relative Atomic Mass	7,029712 ± 0,000027 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	570 ± 14 ys
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1967
parity	-

decay mode	intensity
p (proton emission)	100%

⁸B

Massagetal	8
neutron number	3
Relative Atomic Mass	8,024607315 ± 0,000001073 Da
g-factor	0,51775 ± 0,00015
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	771,9 ± 0,9 ms
spin	2
nuclear quadrupole moment	0,0643 ± 0,0014
ontdekkingsdatum	1950
parity	+

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

⁹B

Massagetal	9
neutron number	4
Relative Atomic Mass	9,013329645 ± 0,000000969 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	800 ± 300 zs
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	1940
parity	-

decay mode	intensity
p (proton emission)	100%

¹⁰B

Massagetal	10
neutron number	5
Relative Atomic Mass	10,012936862 ± 0,000000016 Da
g-factor	0,60015453333333 ± 0,00000026666666666667
natural abundance	19,65 ± 0,44
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	3
nuclear quadrupole moment	0,0846 ± 0,0002
ontdekkingsdatum	1920
parity	+

¹¹B

Massagetal	11
neutron number	6
Relative Atomic Mass	11,009305166 ± 0,000000013 Da
g-factor	1,792252 ± 0,00000066666666666667
natural abundance	80,35 ± 0,44
radioaktiwiteit	Stabiele isotoop
Halfleeftyd	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	0,04059 ± 0,0001
ontdekkingsdatum	1920
parity	-

¹²B

Massagetal	12
neutron number	7
Relative Atomic Mass	12,014352638 ± 0,000001418 Da
g-factor	1,003 ± 0,001
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	20,2 ± 0,02 ms
spin	1
nuclear quadrupole moment	0,0132 ± 0,0003
ontdekkingsdatum	1935
parity	+

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

¹³B

Massagetal	13
neutron number	8
Relative Atomic Mass	13,017779981 ± 0,000001073 Da
g-factor	2,1185333333333 ± 0,00033333333333333
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	17,16 ± 0,18 ms
spin	3/2
nuclear quadrupole moment	0,0365 ± 0,0008
ontdekkingsdatum	1956
parity	-

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

¹⁴B

Massagetal	14
neutron number	9
Relative Atomic Mass	14,02540401 ± 0,000022773 Da
g-factor	0,5925 ± 0,0025
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	12,36 ± 0,29 ms
spin	2
nuclear quadrupole moment	0,0297 ± 0,0008
ontdekkingsdatum	1966
parity	-

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

¹⁵B

Massagetal	15
neutron number	10
Relative Atomic Mass	15,031087023 ± 0,000022575 Da
g-factor	1,7726666666667 ± 0,01
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	10,18 ± 0,35 ms
spin	3/2
nuclear quadrupole moment	0,0379 ± 0,0011
ontdekkingsdatum	1966
parity	-

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

¹⁶B

Massagetal	16
neutron number	11
Relative Atomic Mass	16,039841045 ± 0,000026373 Da
g-factor	0
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	0
nuclear quadrupole moment	0
ontdekkingsdatum	2000
parity	-

decay mode	intensity
n (neutron emission)

¹⁷B

Massagetal	17
neutron number	12
Relative Atomic Mass	17,046931399 ± 0,000219114 Da
g-factor	1,7 ± 0,013333333333333
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	5,08 ± 0,05 ms
spin	3/2
nuclear quadrupole moment	0,0385 ± 0,0015
ontdekkingsdatum	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

Massagetal	18
neutron number	13
Relative Atomic Mass	18,055601683 ± 0,00021918 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	2
nuclear quadrupole moment
ontdekkingsdatum	2010
parity	-

decay mode	intensity
n (neutron emission)	100%

¹⁹B

Massagetal	19
neutron number	14
Relative Atomic Mass	19,064166 ± 0,000564 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	2,92 ± 0,13 ms
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	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

Massagetal	20
neutron number	15
Relative Atomic Mass	20,074505644 ± 0,000586538 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	1
nuclear quadrupole moment
ontdekkingsdatum	2018
parity	-

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

²¹B

Massagetal	21
neutron number	16
Relative Atomic Mass	21,084147485 ± 0,00059975 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin	3/2
nuclear quadrupole moment
ontdekkingsdatum	2018
parity	-

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

geskiedenis

Ontdek deur	Sir H. Davy, J.L. Gay-Lussac, L.J. Thénard
ligging van ontdekking	England/France
ontdekkingsdatum	1808
etimologie	From Arabic and Persian words for borax.
uitspraak	BO-ron (Engels)

source

Abundance
Abundance in Earth's crust	10 mg/kg
natural abundance (oseaan)	4,44 mg/L
natural abundance (human body)	0,00007 %
natural abundance (Meteoroïde)	0,00016 %
natural abundance (Son)	0,0000002 %
Abundance in Universe	0,0000001 %

Nuclear Screening Constants

1	s	0.3205
2	p	2.5786
2	s	2.4238

Boor on ChemicalAid

AGROVOC ID	c_1018
Art & Architecture Thesaurus ID	300264228
Australian Educational Vocabulary ID	scot/2755
BNCF	31249
BNF-kode	12140810z
Brockhaus Enzyklopädie online ID	bor-30
CAS Registry Number	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
Encyclopædia Britannica Online ID	science/boron-chemical-element
Encyclopædia Universalis ID	bore
Freebase-kode	/m/025svlc
French Vikidia ID	Bore
GND ID	4007709-3
Gran Enciclopèdia Catalana ID	0085405
Great Russian Encyclopedia Online ID	1878022
HSDB ID	4482
InChI	InChI=1S/B
InChIKey	ZOXJGFHDIHLPTG-UHFFFAOYSA-N
Italian Vikidia ID	Boro
KBpedia ID	Boron
KEGG ID	C06266
LCCN	sh85015871
Latvian National Encyclopedia Online ID	89038
MeSH descriptor ID	D001895
Mindat mineral ID	43412
NDF-RT ID	N0000148267
NDL-kode	00563492
NKC-kode	ph118964
Namuwiki ID	붕소
National Library of Israel J9U ID	987007283095205171
National Library of Latvia ID	000310483
OmegaWiki Defined Meaning	420
OpenAlex ID	C501308230
PSH ID	5791
Pixiv Encyclopedia ID	ホウ素
Probes And Drugs ID	PD143904
PubChem CID	5462311
Quora topic ID	Boron
RxNorm ID	1705
Spanish Vikidia ID	Boro
Store norske leksikon ID	bor_-_grunnstoff
Treccani ID	boro
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 number	8030

Boor (B)

Physical Property

Chemical Property

other

Isotopes of Boron

6B

7B

8B

9B

10B

11B

12B

13B

14B

15B

16B

17B

18B

19B

20B

21B

geskiedenis

source

Nuclear Screening Constants

⁶B

⁷B

⁸B

⁹B

¹⁰B

¹¹B

¹²B

¹³B

¹⁴B

¹⁵B

¹⁶B

¹⁷B

¹⁸B

¹⁹B

²⁰B

²¹B