Fluorum (F)

chemical element with symbol F and atomic number 9

Atomic Number	9
Atomic Weight	18.998403163
mass number	19

Group	17
Period	2
Block	p

proton	9 p⁺
neutron	10 n⁰
electron	9 e^-

Physical Property

Atomic Radius	50 pm 163 pm
molar volume	17.1 cm³/mol
Covalent Radius	64 pm 59 pm 53 pm 67 pm 57 pm
Metallic Radius
ionic radius	128.5 pm 130 pm 131 pm 133 pm 8 pm
Crystal Radius	114.5 pm 116 pm 117 pm 119 pm 22 pm
Van der Waals radius	150 pm 147 pm 347.2 pm 147 pm 171 pm 146 pm 336.4 pm
density	0.001553 g/cm³

Chemical Property

energia

proton affinity	340.1 kJ/mol
electron affinity	3.4011897 eV/particle
ionization energy	17.42282 eV/particle 34.97081 eV/particle 62.708 eV/particle 87.175 eV/particle 114.249 eV/particle 157.1631 eV/particle 185.1868 eV/particle 953.898 eV/particle 1103.11743 eV/particle

enthalpy of vaporization	6.54 kJ/mol
enthalpy of fusion	0.51 kJ/mol
standard enthalpy of formation	79.335 kJ/mol
electron

Tegimen electronicum	2, 7

valence electron	7 ⓘ

electron configuration	[He] 2s² 2p⁵ⓘ 1s² 2s² 2p⁵

oxidation number	-1, 0
electronegativity	24.8 eV/particle 0.344443 3.98
Electrophilicity Index	3.865807423136221 eV/particle
fundamental state of matter

phase of matter	Gas
gaseous state of matter	Diatomic
Boiling Point	85.04 K
Melting Point	53.48 K
critical pressure	5.1724 MPa
critical temperature	144.41 K
Punctum triplex	53.48 K 90 kPa
appearance
Color	Colorless #daa520 #90e050 #7fd03b
appearance
refractive index	1.000195
thermodynamic material property
Thermal Conductivity	0.028 W/(m K)
thermal expansion
molar heat capacity	31.304 J/(mol K)
Specific Heat Capacity	0.824 J/(g⋅K)
heat capacity ratio	7/5
electrical properties
type
electrical conductivity
electrical resistivity
Superconductrum
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure	Base Centered Monoclinic (MCL)
lattice constant
Lattice Angles	π/2, π/2, π/2
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
celeritas soni
classificare
Category	Halogens, Halogens
CAS Group	VIIB
IUPAC Group	VIIA
Glawe Number	102
Mendeleev Number	106
Pettifor Number	102
Geochemical Class	semi-volatile
Goldschmidt classification	litophile

other

Gas Basicity	315.1 kJ/mol
polarizability	3.74 ± 0.08 a₀
C6 Dispersion Coefficient	9.52 a₀ 10.2 a₀
allotrope	Difluorine
Neutron cross section	0.0096
Neutron Mass Absorption	0.00002
quantum number	2P3/2
space group	15 (C12/c1)

Isotopes of Fluorine

Stable Isotopes	1
Unstable Isotopes	18
Natural Isotopes	1

¹³F

mass number	13
neutron number	4
Relative Atomic Mass	13.045121 ± 0.000537 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	1/2
nuclear quadrupole moment	0
repertus
parity	+

decay mode	intensity
p (proton emission)

¹⁴F

mass number	14
neutron number	5
Relative Atomic Mass	14.034315196 ± 0.000044142 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	500 ± 60 ys
Volubilitas	2
nuclear quadrupole moment
repertus	2010
parity	-

decay mode	intensity
p (proton emission)

¹⁵F

mass number	15
neutron number	6
Relative Atomic Mass	15.017785139 ± 0.000015029 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	1.1 ± 0.3 zs
Volubilitas	1/2
nuclear quadrupole moment	0
repertus	1978
parity	+

decay mode	intensity
p (proton emission)	100%

¹⁶F

mass number	16
neutron number	7
Relative Atomic Mass	16.011460278 ± 0.000005758 Da
g-factor	0
natural abundance
radioactivitas	☢️ radioactive element
half-life	21 ± 5 zs
Volubilitas	0
nuclear quadrupole moment	0
repertus	1964
parity	-

decay mode	intensity
p (proton emission)	100%

¹⁷F

mass number	17
neutron number	8
Relative Atomic Mass	17.002095237 ± 0.000000266 Da
g-factor	1.88852 ± 0.00012
natural abundance
radioactivitas	☢️ radioactive element
half-life	64.37 ± 0.027 s
Volubilitas	5/2
nuclear quadrupole moment	0.076 ± 0.004
repertus	1934
parity	+

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

¹⁸F

mass number	18
neutron number	9
Relative Atomic Mass	18.000937324 ± 0.000000497 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	109.734 ± 0.008 m
Volubilitas	1
nuclear quadrupole moment
repertus	1937
parity	+

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

¹⁹F

mass number	19
neutron number	10
Relative Atomic Mass	18.99840316207 ± 0.00000000088 Da
g-factor	5.256642 ± 0.000008
natural abundance	100
radioactivitas	stable isotope
half-life	Not Radioactive ☢️
Volubilitas	1/2
nuclear quadrupole moment	0
repertus	1920
parity	+

²⁰F

mass number	20
neutron number	11
Relative Atomic Mass	19.999981252 ± 0.000000031 Da
g-factor	1.046675 ± 0.000045
natural abundance
radioactivitas	☢️ radioactive element
half-life	11.0062 ± 0.008 s
Volubilitas	2
nuclear quadrupole moment	0.056 ± 0.004
repertus	1935
parity	+

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

²¹F

mass number	21
neutron number	12
Relative Atomic Mass	20.999948893 ± 0.000001932 Da
g-factor	1.56776 ± 0.00048
natural abundance
radioactivitas	☢️ radioactive element
half-life	4.158 ± 0.02 s
Volubilitas	5/2
nuclear quadrupole moment	0.011 ± 0.002
repertus	1955
parity	+

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

²²F

mass number	22
neutron number	13
Relative Atomic Mass	22.002998812 ± 0.00001331 Da
g-factor	0.6736 ± 0.0001
natural abundance
radioactivitas	☢️ radioactive element
half-life	4.23 ± 0.04 s
Volubilitas	4
nuclear quadrupole moment	0.003 ± 0.002
repertus	1965
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	11%

²³F

mass number	23
neutron number	14
Relative Atomic Mass	23.003526875 ± 0.00003577 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	2.23 ± 0.14 s
Volubilitas	5/2
nuclear quadrupole moment
repertus	1970
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	14%

²⁴F

mass number	24
neutron number	15
Relative Atomic Mass	24.00809937 ± 0.000104853 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	384 ± 16 ms
Volubilitas	3
nuclear quadrupole moment
repertus	1970
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	5.9%

²⁵F

mass number	25
neutron number	16
Relative Atomic Mass	25.012167727 ± 0.000103535 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	80 ± 9 ms
Volubilitas	5/2
nuclear quadrupole moment
repertus	1970
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	23.1%
2n (2-neutron emission)

²⁶F

mass number	26
neutron number	17
Relative Atomic Mass	26.020048065 ± 0.000114898 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	8.2 ± 0.9 ms
Volubilitas	1
nuclear quadrupole moment
repertus	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	13.5%
2n (2-neutron emission)

²⁷F

mass number	27
neutron number	18
Relative Atomic Mass	27.026981897 ± 0.000129037 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	5 ± 0.2 ms
Volubilitas	5/2
nuclear quadrupole moment
repertus	1981
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	77%
2n (2-neutron emission)

²⁸F

mass number	28
neutron number	19
Relative Atomic Mass	28.035860448 ± 0.000129198 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	46 zs
Volubilitas	4
nuclear quadrupole moment
repertus	2012
parity	-

decay mode	intensity
n (neutron emission)	100%

²⁹F

mass number	29
neutron number	20
Relative Atomic Mass	29.043103 ± 0.000564 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	2.5 ± 0.3 ms
Volubilitas	5/2
nuclear quadrupole moment
repertus	1989
parity	+

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

³⁰F

mass number	30
neutron number	21
Relative Atomic Mass	30.052561 ± 0.000537 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas
nuclear quadrupole moment
repertus
parity

decay mode	intensity
n (neutron emission)

³¹F

mass number	31
neutron number	22
Relative Atomic Mass	31.061023 ± 0.000574 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	5/2
nuclear quadrupole moment
repertus	1999
parity	+

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

historia

inventor	Henri Moissan
location of discovery	France
repertus	1886
Etymologia	Latin: fluere (flow).
pronunciation	FLU-eh-reen (English)

source

Abundance
Abundance in Earth's crust	585 mg/kg
natural abundance (Oceanus)	1.3 mg/L
natural abundance (Corpus humanum)	0.0037 %
natural abundance (Meteoroides)	0.0087 %
natural abundance (Sol)	0.00005 %
Abundance in Universe	0.00004 %

Nuclear Screening Constants

1	s	0.3499
2	p	3.9
2	s	3.8724

Fluorum on ChemicalAid

Australian Educational Vocabulary ID	scot/3520
BNCF Thesaurus ID	21008
Brockhaus Enzyklopädie online ID	fluor
CAS Registry Number	7782-41-4
Den Store Danske ID	fluor
Encyclopædia Britannica Online ID	science/fluorine
Encyclopædia Universalis ID	fluor
French Vikidia ID	Fluor
Golden ID	Fluorine-E8PGZX
Great Russian Encyclopedia Online ID	4724787
Italian Vikidia ID	Fluoro
KBpedia ID	Fluorine
Latvian National Encyclopedia Online ID	103880
MeSH descriptor ID	D005461
Mindat mineral ID	5396
NALT ID	40726
Namuwiki ID	플루오린
National Library of Israel J9U ID	987007538444105171
OmegaWiki Defined Meaning	1496
OpenAlex ID	C506198293
PSH ID	5811
Postimees topic ID	580112
PubChem CID	5360525
Quora topic ID	Fluorine
Römpp online ID	RD-06-01350
Spanish Vikidia ID	Flúor
Store medisinske leksikon ID	fluor
Store medisinske leksikon ID	fluor_-_medisin
Store norske leksikon ID	fluor
Treccani ID	fluoro
USGS Thesaurus ID	1454
WikiSkripta ID	30619
YSA ID	Y95172
YSO ID	16439
Yle topic ID	18-12090
siglum BnF	11976289w
siglum Freebase	/m/025rqc3
siglum GND	4017696-4
siglum NDL	00563785
siglum NKCR	ph171329
siglum apud bibliothecam Congressús	sh85049424
siglum bibliothecae publicae Hispaniae	XX531809

Fluorum (F)

Physical Property

Chemical Property

other

Isotopes of Fluorine

13F

14F

15F

16F

17F

18F

19F

20F

21F

22F

23F

24F

25F

26F

27F

28F

29F

30F

31F

historia

source

Nuclear Screening Constants

¹³F

¹⁴F

¹⁵F

¹⁶F

¹⁷F

¹⁸F

¹⁹F

²⁰F

²¹F

²²F

²³F

²⁴F

²⁵F

²⁶F

²⁷F

²⁸F

²⁹F

³⁰F

³¹F