Clor (Cl)

chemical element with symbol Cl and atomic number 17

Atomic Number	17
Atomic Weight	35.45
Rhif màs	35

Group	17
Period	3
Block	p

Proton	17 p⁺
Niwtron	18 n⁰
Electron	17 e^-

Nodwedd Ffisegol

Atomic Radius	100 pm 206 pm
molar volume	18.7 cm³/mol
covalent radius	99 pm 95 pm 93 pm 105 pm 102 pm
Metallic Radius	91 pm
ionic radius	181 pm 12 pm 8 pm 27 pm
Crystal Radius	167 pm 26 pm 22 pm 41 pm
Van der Waals radius	180 pm 175 pm 395.03 pm 175 pm 207 pm 176 pm 394.7 pm
density	0.002898 g/cm³

Nodwedd Gemegol

egni

proton affinity	513.6 kJ/mol
electron affinity	3.612725 eV/particle
ionization energy	12.96763 eV/particle 23.81364 eV/particle 39.8 eV/particle 53.24 eV/particle 67.68 eV/particle 96.94 eV/particle 114.2013 eV/particle 348.306 eV/particle 400.851 eV/particle 456.68 eV/particle 529.97 eV/particle 591.58 eV/particle 656.3 eV/particle 750.2 eV/particle 809.198 eV/particle 3,658.34362 eV/particle 3,946.2908 eV/particle

enthalpy of vaporization	20.41 kJ/mol
enthalpy of fusion	6.41 kJ/mol
standard enthalpy of formation	121.302 kJ/mol
Electron

plisgyn yr electron	2, 8, 7

valence electron	7 ⓘ

trefn yr electronnau	[Ne] 3s² 3p⁵ⓘ 1s² 2s² 2p⁶ 3s² 3p⁵

Cyflwr ocsidiad	-1, 1, 2, 3, 4, 5, 6, 7
Electronegatifedd	16.97 eV/particle 0.263803 3.16
Electrophilicity Index	3.673315922583194 eV/particle
cyflwr sylfaenol mater

cyflwr mater	Gas
gaseous state of matter	Diatomic
Boiling Point	239.11 K
Melting Point	171.65 K
critical pressure	7.991 MPa
critical temperature	417.05 K
triple point
appearance
lliw	Yellow #00ff00 #1ff01f #38b538
appearance	pale yellow-green gas
Mynegrif plygiant	1.000773
nodwedd ffisegol gwrthrych
Thermal Conductivity	0.009 W/(m K)
thermal expansion
molar heat capacity	33.949 J/(mol K)
Specific Heat Capacity	0.479 J/(g⋅K)
heat capacity ratio	7/5
electrical properties
type	Insulator
dargludedd trydanol	0.00000001 MS/m
Gwrthedd	100 Ω*m
superconductivity
magnetism
type	diamagnetic
magnetic susceptibility (Mass)	-0.0000000072 m³/Kg
magnetic susceptibility (Molar)	-0.000000000511 m³/mol
magnetic susceptibility (Volume)	-0.0000000231
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal Structure	Base Centered Orthorhombic (ORC)
lattice constant	6.24 Å
Lattice Angles	π/2, π/2, π/2
nodwedd mecanyddol deunyddiau
hardness
bulk modulus	1.1 GPa
shear modulus
Young's modulus
Poisson's ratio
speed of sound	206 m/s
classification
Category	Halogens, Halogens
CAS Group	VIIB
IUPAC Group	VIIA
Glawe Number	101
Mendeleev Number	107
Pettifor Number	99
Geochemical Class	semi-volatile
Goldschmidt classification	litophile

other

Gas Basicity	490.1 kJ/mol
polarizability	14.6 ± 0.1 a₀
C6 Dispersion Coefficient	94.6 a₀ 97.1 a₀
allotrope	Dichlorine
Neutron cross section	35.3
Neutron Mass Absorption	0.033
quantum number	2P3/2
space group	64 (Cmca)

Isotopes of Chlorine

Stable Isotopes	2
Unstable Isotopes	23
Natural Isotopes	2

²⁸Cl

Rhif màs	28
neutron number	11
Relative Atomic Mass	28.030349 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	1
nuclear quadrupole moment
dyddiad darganfod	2018
parity	+

decay mode	intensity
p (proton emission)	100%

²⁹Cl

Rhif màs	29
neutron number	12
Relative Atomic Mass	29.015053 ± 0.000203 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	5.4 ± 1.9 zs
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1993
parity	+

decay mode	intensity
p (proton emission)	100%

³⁰Cl

Rhif màs	30
neutron number	13
Relative Atomic Mass	30.005018333 ± 0.000025631 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	3
nuclear quadrupole moment
dyddiad darganfod	2018
parity	+

decay mode	intensity
p (proton emission)	100%

³¹Cl

Rhif màs	31
neutron number	14
Relative Atomic Mass	30.992448097 ± 0.0000037 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	190 ± 1 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1977
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	2.4%

³²Cl

Rhif màs	32
neutron number	15
Relative Atomic Mass	31.985684605 ± 0.000000603 Da
g-factor	1.115 ± 0.006
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	298 ± 1 ms
spin	1
nuclear quadrupole moment
dyddiad darganfod	1953
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺α (β⁺-delayed α emission)	0.054%
β⁺ p (β⁺-delayed proton emission)	0.026%

³³Cl

Rhif màs	33
neutron number	16
Relative Atomic Mass	32.977451988 ± 0.000000419 Da
g-factor	0.50313333333333 ± 0.0002
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	2.5038 ± 0.0022 s
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1940
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

³⁴Cl

Rhif màs	34
neutron number	17
Relative Atomic Mass	33.97376249 ± 0.000000052 Da
g-factor	0
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	1.5267 ± 0.0004 s
spin	0
nuclear quadrupole moment	0
dyddiad darganfod	1934
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

³⁵Cl

Rhif màs	35
neutron number	18
Relative Atomic Mass	34.968852694 ± 0.000000038 Da
g-factor	0.5478 ± 0.000013333333333333
natural abundance	75.8 ± 0.2
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	-0.0817 ± 0.0008
dyddiad darganfod	1919
parity	+

³⁶Cl

Rhif màs	36
neutron number	19
Relative Atomic Mass	35.968306822 ± 0.000000038 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	301.3 ± 1.5 ky
spin	2
nuclear quadrupole moment	-0.178 ± 0.004
dyddiad darganfod	1941
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	98.1%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	1.9%

³⁷Cl

Rhif màs	37
neutron number	20
Relative Atomic Mass	36.965902573 ± 0.000000055 Da
g-factor	0.456 ± 0.0000066666666666667
natural abundance	24.2 ± 0.2
Dadfeilio ymbelydrol	stable isotope
Hanner oes	Not Radioactive ☢️
spin	3/2
nuclear quadrupole moment	-0.0644 ± 0.0006
dyddiad darganfod	1919
parity	+

³⁸Cl

Rhif màs	38
neutron number	21
Relative Atomic Mass	37.968010408 ± 0.000000105 Da
g-factor	1.025 ± 0.01
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	37.23 ± 0.014 m
spin	2
nuclear quadrupole moment
dyddiad darganfod	1940
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

³⁹Cl

Rhif màs	39
neutron number	22
Relative Atomic Mass	38.968008151 ± 0.000001859 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	56.2 ± 0.6 m
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1949
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁴⁰Cl

Rhif màs	40
neutron number	23
Relative Atomic Mass	39.970415466 ± 0.000034423 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	1.35 ± 0.03 m
spin	2
nuclear quadrupole moment
dyddiad darganfod	1956
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁴¹Cl

Rhif màs	41
neutron number	24
Relative Atomic Mass	40.970684525 ± 0.000073777 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	38.4 ± 0.8 s
spin	1/2
nuclear quadrupole moment	0
dyddiad darganfod	1971
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁴²Cl

Rhif màs	42
neutron number	25
Relative Atomic Mass	41.973342 ± 0.000064 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	6.8 ± 0.3 s
spin	2
nuclear quadrupole moment
dyddiad darganfod	1971
parity	-

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

⁴³Cl

Rhif màs	43
neutron number	26
Relative Atomic Mass	42.9740637 ± 0.000066407 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	3.13 ± 0.09 s
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1976
parity	+

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

⁴⁴Cl

Rhif màs	44
neutron number	27
Relative Atomic Mass	43.978014918 ± 0.000091859 Da
g-factor	0.2749 ± 0.0002
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	562 ± 106 ms
spin	2
nuclear quadrupole moment
dyddiad darganfod	1979
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	8%

⁴⁵Cl

Rhif màs	45
neutron number	28
Relative Atomic Mass	44.980394353 ± 0.000146177 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	413 ± 25 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	24%

⁴⁶Cl

Rhif màs	46
neutron number	29
Relative Atomic Mass	45.985254926 ± 0.0001044 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	232 ± 2 ms
spin	2
nuclear quadrupole moment
dyddiad darganfod	1989
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	60%
2n (2-neutron emission)

⁴⁷Cl

Rhif màs	47
neutron number	30
Relative Atomic Mass	46.989715 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes	101 ± 5 ms
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1989
parity	+

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

⁴⁸Cl

Rhif màs	48
neutron number	31
Relative Atomic Mass	47.995405 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod	1989
parity

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

⁴⁹Cl

Rhif màs	49
neutron number	32
Relative Atomic Mass	49.000794 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1989
parity	+

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

⁵⁰Cl

Rhif màs	50
neutron number	33
Relative Atomic Mass	50.008266 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod	2009
parity

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

⁵¹Cl

Rhif màs	51
neutron number	34
Relative Atomic Mass	51.015341 ± 0.000751 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin	3/2
nuclear quadrupole moment
dyddiad darganfod	1990
parity	+

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

⁵²Cl

Rhif màs	52
neutron number	35
Relative Atomic Mass	52.024004 ± 0.000751 Da
g-factor
natural abundance
Dadfeilio ymbelydrol	☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod	2018
parity

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

hanes

darganfyddwr neu ddyfeisiwr	Carl Wilhelm Scheele
man darganfod	Sweden
dyddiad darganfod	1774
geirdarddiad	Greek: chlôros (greenish yellow).
ynganiad	KLOR-een (Saesneg)

source

Abundance
Abundance in Earth's crust	145 mg/kg
natural abundance (cefnfor)	19,400 mg/L
natural abundance (corff dynol)	0.12 %
natural abundance (Awyrfaen)	0.037 %
natural abundance (Haul)	0.0008 %
Abundance in Universe	0.0001 %

Nuclear Screening Constants

1	s	0.4761
2	p	4.0068
2	s	5.5696
3	p	10.8839
3	s	9.9317

Clor on ChemicalAid

Australian Educational Vocabulary ID	scot/3509
Brockhaus Enzyklopädie online ID	chlor-20
ChEBI ID	23116
Den Store Danske ID	klor
Dynodwr Drugbank (Alberta)	11109
EPPO Code	TXCHLO
EuroVoc ID	5971
French Vikidia ID	Chlore
GND	4147748-0
Golden ID	Chlorine-NRE4
Great Russian Encyclopedia Online ID	4694434
Krugosvet article	nauka_i_tehnika/himiya/HLOR.html
Latvian National Encyclopedia Online ID	131436
Namuwiki ID	염소(원소)
National Library of Israel J9U ID	987007285618505171
OmegaWiki Defined Meaning	575
OpenAlex ID	C505241676
OpenAlex ID	C2991844076
OpenAlex ID	C2993530813
Rhif Cofrestru CAS	7782-50-5
Römpp online ID	RD-03-01354
STW Thesaurus for Economics ID	18080-0
Spanish Vikidia ID	Cloro
Store medisinske leksikon ID	klor
Store norske leksikon ID	klor
USGS Thesaurus ID	1428
WordNet 3.1 Synset ID	14658769-n
dynodwr AAT	300264246
dynodwr BnF	119811094
dynodwr Encyclopædia Britannica Online	science/chlorine
dynodwr Encyclopædia Universalis	chlore
dynodwr Freebase	/m/025tkqp
dynodwr KBpedia	Chlorine
dynodwr LCAuth	sh85024541
dynodwr MeSH	D002713
dynodwr NDL	00562008
dynodwr NE.se	klor
dynodwr NKC	ph163876
dynodwr PSH	5812
dynodwr Quora	Chlorine
dynodwr Treccani	cloro
dynodwr YSO	12904
dynodwr thesawrws Senedd y DU	9150
dynodwr yn thesawrws y BNCF	792

Clor (Cl)

Nodwedd Ffisegol

Nodwedd Gemegol

other

Isotopes of Chlorine

28Cl

29Cl

30Cl

31Cl

32Cl

33Cl

34Cl

35Cl

36Cl

37Cl

38Cl

39Cl

40Cl

41Cl

42Cl

43Cl

44Cl

45Cl

46Cl

47Cl

48Cl

49Cl

50Cl

51Cl

52Cl

hanes

source

Nuclear Screening Constants

²⁸Cl

²⁹Cl

³⁰Cl

³¹Cl

³²Cl

³³Cl

³⁴Cl

³⁵Cl

³⁶Cl

³⁷Cl

³⁸Cl

³⁹Cl

⁴⁰Cl

⁴¹Cl

⁴²Cl

⁴³Cl

⁴⁴Cl

⁴⁵Cl

⁴⁶Cl

⁴⁷Cl

⁴⁸Cl

⁴⁹Cl

⁵⁰Cl

⁵¹Cl

⁵²Cl