Francium (Fr)

Francium is the 87th element in the periodic table and has a symbol of Fr and atomic number of 87. It has an atomic weight of (223) and a mass number of 197. Francium has eighty-seven protons and one hundred ten neutrons in its nucleus, and eighty-seven electrons in seven shells. It is located in group one, period seven and block s of the periodic table. Radioactive element, belongs to group 1 of the periodic table. Found in uranium and thorium ores. The 22 known isotopes are all radioactive, with the most stable being Fr-223. Its existence was confirmed in 1939 by Marguerite Perey.

Atomic Number	87
Atomic Weight	223
Mass Number	197

Group	1
Period	7
Block	s

Protons	87 p⁺
Neutrons	110 n⁰
Electrons	87 e^-

Physical Properties

Atomic Radius	258 pm
Molar Volume
Covalent Radius	223 pm 218 pm 260 pm
Metallic Radius
Ionic Radius	180 pm
Crystal Radius	194 pm
Van der Waals Radius	348 pm 364 pm 348 pm 490 pm
Density	1.87 g/cm³

Chemical Properties

Energy

Proton Affinity
Electron Affinity	0.486 eV/particle
Ionization Energy	4.0727409 eV/particle 22.4 eV/particle 33 eV/particle 39.1 eV/particle 50 eV/particle 67 eV/particle 80 eV/particle 106 eV/particle 120 eV/particle 179 eV/particle 200 eV/particle 222.1 eV/particle 245 eV/particle 269 eV/particle 293 eV/particle 324 eV/particle 349 eV/particle 375 eV/particle 400 eV/particle 530 eV/particle 560 eV/particle 590 eV/particle 620 eV/particle 690 eV/particle 720 eV/particle 820 eV/particle 850 eV/particle 910 eV/particle 980 eV/particle 1,040 eV/particle 1,110 eV/particle 1,180 eV/particle 1,250 eV/particle 1,320 eV/particle 1,380 eV/particle 1,460 eV/particle 1,530 eV/particle 1,600 eV/particle 1,670 eV/particle 1,700 eV/particle 1,810 eV/particle 2,119 eV/particle 2,182 eV/particle 2,247 eV/particle 2,317 eV/particle 2,384 eV/particle 2,450 eV/particle 2,564 eV/particle 2,631 eV/particle 2,706 eV/particle 2,774 eV/particle 3,049 eV/particle 3,115 eV/particle 3,190 eV/particle 3,257 eV/particle 3,556 eV/particle 3,635 eV/particle 3,828 eV/particle 3,907 eV/particle 6,365 eV/particle 6,516 eV/particle 6,678 eV/particle 6,849 eV/particle 7,013 eV/particle 7,172 eV/particle 7,500 eV/particle 7,670 eV/particle 7,850 eV/particle 8,020 eV/particle 8,500 eV/particle 8,640 eV/particle 8,800 eV/particle 8,950 eV/particle 9,890 eV/particle 10,070 eV/particle 10,420 eV/particle 10,580 eV/particle 22,330 eV/particle 22,730 eV/particle 23,170 eV/particle 23,570 eV/particle 27,060 eV/particle 27,590 eV/particle 28,260 eV/particle 28,683.4 eV/particle 113,817.2 eV/particle 115,859 eV/particle

Heat of Vaporization
Heat of Fusion	15 kJ/mol
Heat of Formation
Electrons

Electron Shells	2, 8, 18, 32, 18, 8, 1

Valence Electrons	1 ⓘ

Electron Configuration	[Rn] 7s¹ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s¹

Oxidation States	1
Electronegativity	0.08731 0.7
Electrophilicity Index	0.7242688826969913 eV/particle
States of Matter

Phase	Solid
Gas Phase
Boiling Point
Melting Point	294.15 K
Critical Pressure
Critical Temperature
Triple Point
Visual
Francium is a Silver. Fr has a CPK of #ffffff, Jmol of #420066, and MOLCAS GV of #420066.
Color	Silver #ffffff #420066 #420066
Appearance
Refractive Index
Thermodynamic Properties
Thermal Conductivity
Thermal Expansion
Molar Heat Capacity
Specific Heat Capacity
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
Type
Electrical Conductivity
Electrical Resistivity
Superconducting Point
Magnetism
Type
Magnetic Susceptibility (Mass)
Magnetic Susceptibility (Molar)
Magnetic Susceptibility (Volume)
Magnetic Ordering
Curie Point
Neel Point
Structure
The Crystal Structure of Francium is BCC. The lattice angles of Fr is .
Crystal Structure	(BCC)
Lattice Constant
Lattice Angles
Mechanical Properties

Hardness
Bulk Modulus
Shear Modulus
Young's Modulus
Poisson Ratio
Speed of Sound
Classification
The CAS Group of Francium is IA. The IUPAC Group of Fr is IA. The Glawe Number of Element 87 is 7. The Mendeleev Number of Francium (Fr) is 6. The Pettifor Number of Francium is 7. The Geochemical Class of Fr is U/Th decay series. The Goldschmidt Class of Element 87 is synthetic.
Category	Alkali metals, Alkali metals
CAS Group	IA
IUPAC Group	IA
Glawe Number	7
Mendeleev Number	6
Pettifor Number	7
Geochemical Class	U/Th decay series
Goldschmidt Class	synthetic

Other

The Dipole Polarizability of Francium is 317.8 plus or minus 2.4 a₀. The Allotropes of Fr is . The Quantum Numbers of Element 87 is 2S1/2. The Space Group of Francium (Fr) is ().

Gas Basicity
Dipole Polarizability	317.8 ± 2.4 a₀
C6 Dispersion Coefficient
Allotropes
Neutron Cross Section
Neutron Mass Absorption
Quantum Numbers	2S1/2
Space Group	()

Isotopes of Francium

Stable Isotopes	0
Unstable Isotopes	37
Natural Isotopes	0

¹⁹⁷Fr

Mass Number	197
Neutron Number	110
Relative Atomic Mass	197.011008086 ± 0.000060584 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	2.3 ± 1.9 ms
Spin	7/2
Quadrupole Moment
Discovery Year	2013
Parity	-

Decay Mode	Intensity
α (α emission)	100%

¹⁹⁸Fr

Mass Number	198
Neutron Number	111
Relative Atomic Mass	198.010282081 ± 0.000033419 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	15 ± 3 ms
Spin	3
Quadrupole Moment
Discovery Year	2013
Parity	+

Decay Mode	Intensity
α (α emission)	100%

¹⁹⁹Fr

Mass Number	199
Neutron Number	112
Relative Atomic Mass	199.007269384 ± 0.000014734 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	6.6 ± 2.2 ms
Spin	1/2
Quadrupole Moment	0
Discovery Year	1999
Parity	+

Decay Mode	Intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰⁰Fr

Mass Number	200
Neutron Number	113
Relative Atomic Mass	200.006584666 ± 0.000032769 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	47.5 ± 2.8 ms
Spin	3
Quadrupole Moment
Discovery Year	1995
Parity	+

Decay Mode	Intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
β⁺ SF (β⁺-delayed fission)

²⁰¹Fr

Mass Number	201
Neutron Number	114
Relative Atomic Mass	201.003852491 ± 0.000009747 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	62.8 ± 1.9 ms
Spin	9/2
Quadrupole Moment
Discovery Year	1980
Parity	-

Decay Mode	Intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰²Fr

Mass Number	202
Neutron Number	115
Relative Atomic Mass	202.003329637 ± 0.000006476 Da
G-Factor	1.3 ± 0.016666666666667
Abundance
Radioactivity	☢️ Radioactive
Half Life	372 ± 12 ms
Spin	3
Quadrupole Moment
Discovery Year	1980
Parity	+

Decay Mode	Intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰³Fr

Mass Number	203
Neutron Number	116
Relative Atomic Mass	203.000940867 ± 0.000006689 Da
G-Factor	0.83111111111111 ± 0.0088888888888889
Abundance
Radioactivity	☢️ Radioactive
Half Life	550 ± 10 ms
Spin	9/2
Quadrupole Moment	-0.47 ± 0.02
Discovery Year	1967
Parity	-

Decay Mode	Intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰⁴Fr

Mass Number	204
Neutron Number	117
Relative Atomic Mass	204.000651972 ± 0.000026389 Da
G-Factor	1.33 ± 0.01
Abundance
Radioactivity	☢️ Radioactive
Half Life	1.75 ± 0.26 s
Spin	3
Quadrupole Moment	-0.141 ± 0.009
Discovery Year	1964
Parity	+

Decay Mode	Intensity
α (α emission)	96%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰⁵Fr

Mass Number	205
Neutron Number	118
Relative Atomic Mass	204.998593854 ± 0.000008399 Da
G-Factor	0.84444444444444 ± 0.0066666666666667
Abundance
Radioactivity	☢️ Radioactive
Half Life	3.9 ± 0.07 s
Spin	9/2
Quadrupole Moment	-0.305 ± 0.018
Discovery Year	1964
Parity	-

Decay Mode	Intensity
α (α emission)	98.5%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	1.5%

²⁰⁶Fr

Mass Number	206
Neutron Number	119
Relative Atomic Mass	205.998661441 ± 0.000029856 Da
G-Factor	1.3233333333333 ± 0.016666666666667
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin	3
Quadrupole Moment	-0.354 ± 0.009
Discovery Year	1964
Parity	+

Decay Mode	Intensity
α (α emission)	88.4%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	11.6%

²⁰⁷Fr

Mass Number	207
Neutron Number	120
Relative Atomic Mass	206.99694145 ± 0.000018847 Da
G-Factor	0.86 ± 0.0088888888888889
Abundance
Radioactivity	☢️ Radioactive
Half Life	14.8 ± 0.1 s
Spin	9/2
Quadrupole Moment	-0.24 ± 0.02
Discovery Year	1964
Parity	-

Decay Mode	Intensity
α (α emission)	95%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰⁸Fr

Mass Number	208
Neutron Number	121
Relative Atomic Mass	207.997139082 ± 0.000012514 Da
G-Factor	0.67285714285714 ± 0.0057142857142857
Abundance
Radioactivity	☢️ Radioactive
Half Life	59.1 ± 0.3 s
Spin	7
Quadrupole Moment	0.052 ± 0.011
Discovery Year	1964
Parity	+

Decay Mode	Intensity
α (α emission)	89%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	11%

²⁰⁹Fr

Mass Number	209
Neutron Number	122
Relative Atomic Mass	208.995939701 ± 0.000012349 Da
G-Factor	0.87333333333333 ± 0.011111111111111
Abundance
Radioactivity	☢️ Radioactive
Half Life	50.5 ± 0.7 s
Spin	9/2
Quadrupole Moment	-0.26 ± 0.02
Discovery Year	1964
Parity	-

Decay Mode	Intensity
α (α emission)	89%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	11%

²¹⁰Fr

Mass Number	210
Neutron Number	123
Relative Atomic Mass	209.996410596 ± 0.000014407 Da
G-Factor	0.73 ± 0.0083333333333333
Abundance
Radioactivity	☢️ Radioactive
Half Life	3.18 ± 0.06 m
Spin	6
Quadrupole Moment	0.21 ± 0.02
Discovery Year	1964
Parity	+

Decay Mode	Intensity
α (α emission)	71%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²¹¹Fr

Mass Number	211
Neutron Number	124
Relative Atomic Mass	210.995555189 ± 0.000012872 Da
G-Factor	0.88222222222222 ± 0.011111111111111
Abundance
Radioactivity	☢️ Radioactive
Half Life	3.1 ± 0.02 m
Spin	9/2
Quadrupole Moment	-0.21 ± 0.02
Discovery Year	1964
Parity	-

Decay Mode	Intensity
α (α emission)	87%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	13%

²¹²Fr

Mass Number	212
Neutron Number	125
Relative Atomic Mass	211.99622542 ± 0.000009419 Da
G-Factor	0.918 ± 0.01
Abundance
Radioactivity	☢️ Radioactive
Half Life	20 ± 0.6 m
Spin	5
Quadrupole Moment	-0.1 ± 0.002
Discovery Year	1950
Parity	+

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	57%
α (α emission)	43%

²¹³Fr

Mass Number	213
Neutron Number	126
Relative Atomic Mass	212.99618441 ± 0.000005053 Da
G-Factor	0.88666666666667 ± 0.0022222222222222
Abundance
Radioactivity	☢️ Radioactive
Half Life	34.14 ± 0.06 s
Spin	9/2
Quadrupole Moment	-0.138 ± 0.003
Discovery Year	1964
Parity	-

Decay Mode	Intensity
α (α emission)	99.44%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0.56%

²¹⁴Fr

Mass Number	214
Neutron Number	127
Relative Atomic Mass	213.998971193 ± 0.000009145 Da
G-Factor	0.241 ± 0.016
Abundance
Radioactivity	☢️ Radioactive
Half Life	5.51 ± 0.13 ms
Spin	1
Quadrupole Moment
Discovery Year	1967
Parity	-

Decay Mode	Intensity
α (α emission)	100%

²¹⁵Fr

Mass Number	215
Neutron Number	128
Relative Atomic Mass	215.000341534 ± 0.000007585 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	90 ± 4 ns
Spin	9/2
Quadrupole Moment
Discovery Year	1970
Parity	-

Decay Mode	Intensity
α (α emission)	100%

²¹⁶Fr

Mass Number	216
Neutron Number	129
Relative Atomic Mass	216.003189523 ± 0.00000448 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	700 ± 20 ns
Spin	1
Quadrupole Moment
Discovery Year	1970
Parity	-

Decay Mode	Intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²¹⁷Fr

Mass Number	217
Neutron Number	130
Relative Atomic Mass	217.00463198 ± 0.000007011 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	22 ± 5 us
Spin	9/2
Quadrupole Moment
Discovery Year	1968
Parity	-

Decay Mode	Intensity
α (α emission)	100%

²¹⁸Fr

Mass Number	218
Neutron Number	131
Relative Atomic Mass	218.00757862 ± 0.000004546 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	1.4 ± 0.5 ms
Spin	1
Quadrupole Moment
Discovery Year	1949
Parity	-

Decay Mode	Intensity
α (α emission)	100%

²¹⁹Fr

Mass Number	219
Neutron Number	132
Relative Atomic Mass	219.009250664 ± 0.00000738 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	22.5 ± 1.7 ms
Spin	9/2
Quadrupole Moment	-1.19 ± 0.02
Discovery Year	1948
Parity	-

Decay Mode	Intensity
α (α emission)	100%

²²⁰Fr

Mass Number	220
Neutron Number	133
Relative Atomic Mass	220.012326789 ± 0.000004324 Da
G-Factor	-0.66 ± 0.01
Abundance
Radioactivity	☢️ Radioactive
Half Life	27.4 ± 0.3 s
Spin	1
Quadrupole Moment	0.487 ± 0.008
Discovery Year	1948
Parity	+

Decay Mode	Intensity
α (α emission)	100%
β⁻ (β⁻ decay)	0.35%

²²¹Fr

Mass Number	221
Neutron Number	134
Relative Atomic Mass	221.014253714 ± 0.000005245 Da
G-Factor	0.628 ± 0.008
Abundance
Radioactivity	☢️ Radioactive
Half Life	4.801 ± 0.005 m
Spin	5/2
Quadrupole Moment	-1.02 ± 0.03
Discovery Year	1947
Parity	-

Decay Mode	Intensity
α (α emission)	100%
β⁻ (β⁻ decay)	0.0048%
14C	8.8%

²²²Fr

Mass Number	222
Neutron Number	135
Relative Atomic Mass	222.017582615 ± 0.000008 Da
G-Factor	0.315 ± 0.005
Abundance
Radioactivity	☢️ Radioactive
Half Life	14.2 ± 0.3 m
Spin	2
Quadrupole Moment	0.51 ± 0.04
Discovery Year	1975
Parity	-

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²²³Fr

Mass Number	223
Neutron Number	136
Relative Atomic Mass	223.019734241 ± 0.000002073 Da
G-Factor	0.77333333333333 ± 0.0066666666666667
Abundance
Radioactivity	☢️ Radioactive
Half Life	22 ± 0.07 m
Spin	3/2
Quadrupole Moment	1.18 ± 0.02
Discovery Year	1939
Parity	-

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
α (α emission)	0.006%

²²⁴Fr

Mass Number	224
Neutron Number	137
Relative Atomic Mass	224.023348096 ± 0.000012 Da
G-Factor	0.4 ± 0.01
Abundance
Radioactivity	☢️ Radioactive
Half Life	3.33 ± 0.1 m
Spin	1
Quadrupole Moment	0.523 ± 0.009
Discovery Year	1969
Parity	-

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²²⁵Fr

Mass Number	225
Neutron Number	138
Relative Atomic Mass	225.025572466 ± 0.000012847 Da
G-Factor	0.70666666666667 ± 0.0066666666666667
Abundance
Radioactivity	☢️ Radioactive
Half Life	3.95 ± 0.14 m
Spin	3/2
Quadrupole Moment	1.33 ± 0.02
Discovery Year	1969
Parity	-

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²²⁶Fr

Mass Number	226
Neutron Number	139
Relative Atomic Mass	226.029544512 ± 0.000006688 Da
G-Factor	0.0712 ± 0.0014
Abundance
Radioactivity	☢️ Radioactive
Half Life	48.5 ± 0.7 s
Spin	1
Quadrupole Moment	-1.37 ± 0.03
Discovery Year	1969
Parity	-

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²²⁷Fr

Mass Number	227
Neutron Number	140
Relative Atomic Mass	227.031865413 ± 0.000006332 Da
G-Factor	2.98 ± 0.04
Abundance
Radioactivity	☢️ Radioactive
Half Life	2.47 ± 0.03 m
Spin	1/2
Quadrupole Moment	0
Discovery Year	1972
Parity	+

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²²⁸Fr

Mass Number	228
Neutron Number	141
Relative Atomic Mass	228.035839433 ± 0.000007226 Da
G-Factor	-0.38 ± 0.005
Abundance
Radioactivity	☢️ Radioactive
Half Life	38 ± 1 s
Spin	2
Quadrupole Moment	2.41 ± 0.06
Discovery Year	1972
Parity	-

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²²⁹Fr

Mass Number	229
Neutron Number	142
Relative Atomic Mass	229.038291443 ± 0.000005368 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	50.2 ± 0.4 s
Spin	1/2
Quadrupole Moment	0
Discovery Year	1975
Parity	+

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²³⁰Fr

Mass Number	230
Neutron Number	143
Relative Atomic Mass	230.042390787 ± 0.000007022 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	19.1 ± 0.5 s
Spin	2
Quadrupole Moment
Discovery Year	1987
Parity	+

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²³¹Fr

Mass Number	231
Neutron Number	144
Relative Atomic Mass	231.045175353 ± 0.0000083 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	17.6 ± 0.6 s
Spin	1/2
Quadrupole Moment	0
Discovery Year	1985
Parity	+

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

²³²Fr

Mass Number	232
Neutron Number	145
Relative Atomic Mass	232.049461219 ± 0.000015 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	5.5 ± 0.6 s
Spin	5
Quadrupole Moment
Discovery Year	1990
Parity

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ SF (β⁻-delayed fission)

²³³Fr

Mass Number	233
Neutron Number	146
Relative Atomic Mass	233.052517833 ± 0.000021 Da
G-Factor
Abundance
Radioactivity	☢️ Radioactive
Half Life	900 ± 100 ms
Spin	1/2
Quadrupole Moment	0
Discovery Year	2010
Parity	+

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

History

Francium was discovered in 1939 by Marguerite Perey of the Curie Institute in Paris, France. It was discovered when she was researching the radioactive decay of actinium-227. Marguerite Perey discovered that francium-223 is made naturally when actinium-227 emits an alpha-particle. Francium was named after France

Discoverers	Marguerite Derey
Discovery Location	France
Discovery Year	1939
Etymology (Name Origin)	Named for France, the nation of its discovery.
Pronunciation	FRAN-si-em (English)

Francium is highly radioactive

Francium was the last element discovered in nature, rather than by synthesis

Uses

Due to its instability and rarity, there are no commercial applications for francium. It has been used for research purposes in the fields of biology and of atomic structure. Its use as a potential diagnostic aid for various cancers has also been explored, but this application has been deemed impractical. Since its isotopes have such short half-lives there are no commercially significant compounds of francium.

Sources

Formed by decay of actinium. Chemical properties similar to cesium. Decays to radium or astatine.

Abundance
Abundance in Earth's crust
Natural Abundance (Oceans)
Natural Abundance (Human Body)	0 %
Natural Abundance (Meteor)
Natural Abundance (Sun)
Abundance in Universe	0 %

Nuclear Screening Constants

Also Known As

Fr
element 87
87Fr
catium
eka-cesium
eka-caesium

Translations

Frenchfrancium
Norwegian Bokmålfrancium
Russianфранций
Spanishfrancio
GermanFrancium
Italianfrancio
Norwegian Nynorskfrancium
Hungarianfrancium
Amharicፍራንሺየም
AragoneseFrancio
Arabicفرانسيوم
AzerbaijaniFransium
Belarusianфранцый
Bulgarianфранций
Banglaফ্র্যান্সিয়াম
BretonFrankiom
Bosnianfrancij
Catalanfranci
CorsicanFranciu
Czechfrancium
ChuvashФранци
WelshFfransiwm
Danishfrancium
Greekφράγκιο
Esperantofranciumo
Estonianfrantsium
Basquefrantzio
Persianفرانسیم
Finnishfrankium
FriulianFranci
IrishFrainciam
GalicianFrancio
GuaraniHyãsiakuarepoti
ManxFrankium
Hakka Chinesefrancium
Hebrewפרנציום
Fiji HindiFrancium
Croatianfrancij
Haitian CreoleFransyòm
Armenianֆրանսիում
Interlinguafrancium
Indonesianfransium
Idofrancio
Icelandicfransín
Japaneseフランシウム
Lojbanfasysodna
JavaneseFransium
Georgianფრანციუმი
KazakhФранций
Kannadaಫ್ರಾನ್ಸಿಯಮ್
Korean프랑슘
KurdishFransiyûm
KomiФранций
Latinfrancium
LuxembourgishFrancium
LigurianFransio
Lithuanianfrancis
Latvianfrancijs
Malayalamഫ്രാൻസിയം
Marathiफ्रान्सियम
Western MariФранций
MalayFransium
Burmeseဖရန်စီယမ်
Mazanderaniفرانسیوم
Dutchfrancium
Polishfrans
Western Panjabiفرانسیم
Portuguesefrâncio
QuechuaFransyu
Romanianfranciu
YakutФрансиум
Sicilianfranciu
Serbo-CroatianFrancijum
Slovakfrancium
Slovenianfrancij
AlbanianFranciumi
Serbianфранцијум
Saterland FrisianFrancium
Swedishfrancium
SwahiliFransi
Tamilபிரான்சீயம்
Thaiแฟรนเซียม
Turkishfransiyum
Uyghurفرانسىي
Ukrainianфранцій
Urduفرانسیئم
VepsFrancii
Vietnamesefranxi
WalloonFranciom
WarayFransyo
KalmykФранциум
YorubaFránsíọ̀m
Chinese钫
CebuanoPransyo
Central Kurdishفرانسیۆم
Macedonianфранциум
TagalogPransyo
Punjabiਫ਼ਰਾਂਸੀਅਮ
Odiaଫ୍ରାନ୍‌ସିଅମ
Gujaratiફ્રાંસીયમ
German (Switzerland)Francium
English (Canada)Francium
English (United Kingdom)francium
Portuguese (Brazil)frâncio
Cantonese鈁
OccitanFranci
Chinese (Simplified)钫
TatarФранций
PiedmonteseFransio
Newariफ्रान्सियम
SomaliFaransiyaam
Belarusian (Taraskievica orthography)франц
Chinese (Taiwan)鍅
Chinese (Hong Kong SAR China)鈁
Chinese (Traditional)鍅
UzbekFransiy
Sanskritफ्रान्सियम
KyrgyzФранций
LimburgishFrancium
FaroeseFransium
Teluguఫ్రాన్సియం
Hindiक्षुद्रातु
Maltesefranċju
Nepaliफ्रान्सियम
LombardFrancio
Paliफ्रान्सियम
Gan Chinese鈁
Mongolianфранци
cdoFrancium
Min Nan ChineseFrancium
AsturianFranciu
Bhojpuriफ्रंशियम
Tibetanཧྦ་རན་སིམ།
Scottish GaelicFraingium
Lingua Franca Novafransio
AfrikaansFrankium
kbpFransɩyɔm
Literary Chinese鍅
Sinhalaෆ්‍රැන්සියම්
Northern FrisianFrantsium
oloFrancii (aineh)
Volapükfransin
AromanianFranciu
Wu Chinese钫
TajikФранcий
Low GermanFrancium
SardinianFràntziu
Moroccan Arabicفرانسيوم
Pashtoفرانسيوم
Egyptian Arabicفرانسيوم
BikolPransyo
CornishFrankiom
Manipuriꯐ꯭ꯔꯥꯟꯁꯤꯌꯝ
BalineseFransium
ZuluIShabalalambi

Francium on ChemicalAid

Australian Educational Vocabulary ID	scot/3521
Brockhaus Enzyklopädie online ID	francium
CAS Registry Number	7440-73-5
ChEBI ID	33323
ChemSpider ID	4886484
DSSTOX compound identifier	DTXCID20147885
DSSTox substance ID	DTXSID20225394
Den Store Danske ID	francium
Elhuyar ZTH ID	024312
Encyclopædia Britannica Online ID	science/francium
Encyclopædia Universalis ID	francium
Freebase ID	/m/025rqcb
French Vikidia ID	Francium
GND ID	4155153-9
Gran Enciclopèdia Catalana ID	0110219
Gran Enciclopèdia Catalana ID	0027925
Great Russian Encyclopedia Online ID	4735985
InChI	InChI=1S/Fr
InChIKey	KLMCZVJOEAUDNE-UHFFFAOYSA-N
KBpedia ID	Francium
Library of Congress authority ID	sh85051541
MeSH descriptor ID	D005605
NE.se ID	francium
National Library of Israel J9U ID	987007550763805171
OmegaWiki Defined Meaning	159016
PSH ID	5749
PubChem CID	6328145
Quora topic ID	Francium
Store norske leksikon ID	francium
Treccani ID	francio
UNII	15TEQ7D2QF
USGS Thesaurus ID	1457
WordNet 3.1 Synset ID	14662042-n

Francium (Fr)

Physical Properties

Chemical Properties

Other

Isotopes of Francium

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