Francij[um] (Fr)

hemijski element sa simbolom Fr i atomskim brojem 87

Atomic Number	87
Atomic Weight	223
Maseni broj	197

Group	1
Period	7
Block	s

Proton	87 p⁺
Neutron	110 n⁰
Elektron	87 e^-

Animated Bohrov model atoma of Fr (Francij[um])

Physical Property

Atomski Radijus	258 pm
Molarni volumen
covalent radius	223 pm 218 pm 260 pm
Metallic Radius
Ionski radijus	180 pm
Crystal Radius	194 pm
Van der Waalsov radijus	348 pm 364 pm 348 pm 490 pm
gustoća	1,87 g/cm³

Chemical Property

energija

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

Toplota isparavanja
toplota topljenja	15 kJ/mol
standard enthalpy of formation
Elektron

electron shell	2, 8, 18, 32, 18, 8, 1

Valentni elektron	1 ⓘ

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

oksidacijsko stanje	1
Elektronegativnost	0.08731 0.7
Electrophilicity Index	0,7242688826969913 eV/particle
fundamental state of matter

agregatno stanje	Solid
gaseous state of matter
Boiling Point
Melting Point	294,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja	Silver #ffffff #420066 #420066
appearance
Indeks prelamanja
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Specifična električna provodljivost
electrical resistivity
Superprovodljivost
Magnetizam
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
Tvrdoća
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Brzina zvuka
klasifikacija
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 classification	synthetic

other

Gas Basicity
polarizability	317,8 ± 2,4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
Kvantni brojevi	2S1/2
space group	()

Isotopes of Francium

Stable Isotopes	0
Unstable Isotopes	37
Natural Isotopes	0

¹⁹⁷Fr

Maseni broj	197
broj neutrona	110
Relative Atomic Mass	197,011008086 ± 0,000060584 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,3 ± 1,9 ms
spin	7/2
nuclear quadrupole moment
datum otkrića	2013
parity	-

decay mode	intensity
α (α emission)	100%

¹⁹⁸Fr

Maseni broj	198
broj neutrona	111
Relative Atomic Mass	198,010282081 ± 0,000033419 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	15 ± 3 ms
spin	3
nuclear quadrupole moment
datum otkrića	2013
parity	+

decay mode	intensity
α (α emission)	100%

¹⁹⁹Fr

Maseni broj	199
broj neutrona	112
Relative Atomic Mass	199,007269384 ± 0,000014734 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	6,6 ± 2,2 ms
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1999
parity	+

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

²⁰⁰Fr

Maseni broj	200
broj neutrona	113
Relative Atomic Mass	200,006584666 ± 0,000032769 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	47,5 ± 2,8 ms
spin	3
nuclear quadrupole moment
datum otkrića	1995
parity	+

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

²⁰¹Fr

Maseni broj	201
broj neutrona	114
Relative Atomic Mass	201,003852491 ± 0,000009747 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	62,8 ± 1,9 ms
spin	9/2
nuclear quadrupole moment
datum otkrića	1980
parity	-

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

²⁰²Fr

Maseni broj	202
broj neutrona	115
Relative Atomic Mass	202,003329637 ± 0,000006476 Da
g-factor	1,3 ± 0,016666666666667
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	372 ± 12 ms
spin	3
nuclear quadrupole moment
datum otkrića	1980
parity	+

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

²⁰³Fr

Maseni broj	203
broj neutrona	116
Relative Atomic Mass	203,000940867 ± 0,000006689 Da
g-factor	0,83111111111111 ± 0,0088888888888889
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	550 ± 10 ms
spin	9/2
nuclear quadrupole moment	-0,47 ± 0,02
datum otkrića	1967
parity	-

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

²⁰⁴Fr

Maseni broj	204
broj neutrona	117
Relative Atomic Mass	204,000651972 ± 0,000026389 Da
g-factor	1,33 ± 0,01
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,75 ± 0,26 s
spin	3
nuclear quadrupole moment	-0,141 ± 0,009
datum otkrića	1964
parity	+

decay mode	intensity
α (α emission)	96%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰⁵Fr

Maseni broj	205
broj neutrona	118
Relative Atomic Mass	204,998593854 ± 0,000008399 Da
g-factor	0,84444444444444 ± 0,0066666666666667
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,9 ± 0,07 s
spin	9/2
nuclear quadrupole moment	-0,305 ± 0,018
datum otkrića	1964
parity	-

decay mode	intensity
α (α emission)	98.5%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	1.5%

²⁰⁶Fr

Maseni broj	206
broj neutrona	119
Relative Atomic Mass	205,998661441 ± 0,000029856 Da
g-factor	1,3233333333333 ± 0,016666666666667
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3
nuclear quadrupole moment	-0,354 ± 0,009
datum otkrića	1964
parity	+

decay mode	intensity
α (α emission)	88.4%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	11.6%

²⁰⁷Fr

Maseni broj	207
broj neutrona	120
Relative Atomic Mass	206,99694145 ± 0,000018847 Da
g-factor	0,86 ± 0,0088888888888889
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	14,8 ± 0,1 s
spin	9/2
nuclear quadrupole moment	-0,24 ± 0,02
datum otkrića	1964
parity	-

decay mode	intensity
α (α emission)	95%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁰⁸Fr

Maseni broj	208
broj neutrona	121
Relative Atomic Mass	207,997139082 ± 0,000012514 Da
g-factor	0,67285714285714 ± 0,0057142857142857
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	59,1 ± 0,3 s
spin	7
nuclear quadrupole moment	0,052 ± 0,011
datum otkrića	1964
parity	+

decay mode	intensity
α (α emission)	89%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	11%

²⁰⁹Fr

Maseni broj	209
broj neutrona	122
Relative Atomic Mass	208,995939701 ± 0,000012349 Da
g-factor	0,87333333333333 ± 0,011111111111111
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	50,5 ± 0,7 s
spin	9/2
nuclear quadrupole moment	-0,26 ± 0,02
datum otkrića	1964
parity	-

decay mode	intensity
α (α emission)	89%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	11%

²¹⁰Fr

Maseni broj	210
broj neutrona	123
Relative Atomic Mass	209,996410596 ± 0,000014407 Da
g-factor	0,73 ± 0,0083333333333333
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,18 ± 0,06 m
spin	6
nuclear quadrupole moment	0,21 ± 0,02
datum otkrića	1964
parity	+

decay mode	intensity
α (α emission)	71%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²¹¹Fr

Maseni broj	211
broj neutrona	124
Relative Atomic Mass	210,995555189 ± 0,000012872 Da
g-factor	0,88222222222222 ± 0,011111111111111
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,1 ± 0,02 m
spin	9/2
nuclear quadrupole moment	-0,21 ± 0,02
datum otkrića	1964
parity	-

decay mode	intensity
α (α emission)	87%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	13%

²¹²Fr

Maseni broj	212
broj neutrona	125
Relative Atomic Mass	211,99622542 ± 0,000009419 Da
g-factor	0,918 ± 0,01
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	20 ± 0,6 m
spin	5
nuclear quadrupole moment	-0,1 ± 0,002
datum otkrića	1950
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	57%
α (α emission)	43%

²¹³Fr

Maseni broj	213
broj neutrona	126
Relative Atomic Mass	212,99618441 ± 0,000005053 Da
g-factor	0,88666666666667 ± 0,0022222222222222
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	34,14 ± 0,06 s
spin	9/2
nuclear quadrupole moment	-0,138 ± 0,003
datum otkrića	1964
parity	-

decay mode	intensity
α (α emission)	99.44%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0.56%

²¹⁴Fr

Maseni broj	214
broj neutrona	127
Relative Atomic Mass	213,998971193 ± 0,000009145 Da
g-factor	0,241 ± 0,016
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5,51 ± 0,13 ms
spin	1
nuclear quadrupole moment
datum otkrića	1967
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁵Fr

Maseni broj	215
broj neutrona	128
Relative Atomic Mass	215,000341534 ± 0,000007585 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	90 ± 4 ns
spin	9/2
nuclear quadrupole moment
datum otkrića	1970
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁶Fr

Maseni broj	216
broj neutrona	129
Relative Atomic Mass	216,003189523 ± 0,00000448 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	700 ± 20 ns
spin	1
nuclear quadrupole moment
datum otkrića	1970
parity	-

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

²¹⁷Fr

Maseni broj	217
broj neutrona	130
Relative Atomic Mass	217,00463198 ± 0,000007011 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	22 ± 5 us
spin	9/2
nuclear quadrupole moment
datum otkrića	1968
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁸Fr

Maseni broj	218
broj neutrona	131
Relative Atomic Mass	218,00757862 ± 0,000004546 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,4 ± 0,5 ms
spin	1
nuclear quadrupole moment
datum otkrića	1949
parity	-

decay mode	intensity
α (α emission)	100%

²¹⁹Fr

Maseni broj	219
broj neutrona	132
Relative Atomic Mass	219,009250664 ± 0,00000738 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	22,5 ± 1,7 ms
spin	9/2
nuclear quadrupole moment	-1,19 ± 0,02
datum otkrića	1948
parity	-

decay mode	intensity
α (α emission)	100%

²²⁰Fr

Maseni broj	220
broj neutrona	133
Relative Atomic Mass	220,012326789 ± 0,000004324 Da
g-factor	-0,66 ± 0,01
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	27,4 ± 0,3 s
spin	1
nuclear quadrupole moment	0,487 ± 0,008
datum otkrića	1948
parity	+

decay mode	intensity
α (α emission)	100%
β⁻ (β⁻ decay)	0.35%

²²¹Fr

Maseni broj	221
broj neutrona	134
Relative Atomic Mass	221,014253714 ± 0,000005245 Da
g-factor	0,628 ± 0,008
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,801 ± 0,005 m
spin	5/2
nuclear quadrupole moment	-1,02 ± 0,03
datum otkrića	1947
parity	-

decay mode	intensity
α (α emission)	100%
β⁻ (β⁻ decay)	0.0048%
14C	8.8%

²²²Fr

Maseni broj	222
broj neutrona	135
Relative Atomic Mass	222,017582615 ± 0,000008 Da
g-factor	0,315 ± 0,005
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	14,2 ± 0,3 m
spin	2
nuclear quadrupole moment	0,51 ± 0,04
datum otkrića	1975
parity	-

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

²²³Fr

Maseni broj	223
broj neutrona	136
Relative Atomic Mass	223,019734241 ± 0,000002073 Da
g-factor	0,77333333333333 ± 0,0066666666666667
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	22 ± 0,07 m
spin	3/2
nuclear quadrupole moment	1,18 ± 0,02
datum otkrića	1939
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
α (α emission)	0.006%

²²⁴Fr

Maseni broj	224
broj neutrona	137
Relative Atomic Mass	224,023348096 ± 0,000012 Da
g-factor	0,4 ± 0,01
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,33 ± 0,1 m
spin	1
nuclear quadrupole moment	0,523 ± 0,009
datum otkrića	1969
parity	-

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

²²⁵Fr

Maseni broj	225
broj neutrona	138
Relative Atomic Mass	225,025572466 ± 0,000012847 Da
g-factor	0,70666666666667 ± 0,0066666666666667
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,95 ± 0,14 m
spin	3/2
nuclear quadrupole moment	1,33 ± 0,02
datum otkrića	1969
parity	-

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

²²⁶Fr

Maseni broj	226
broj neutrona	139
Relative Atomic Mass	226,029544512 ± 0,000006688 Da
g-factor	0,0712 ± 0,0014
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	48,5 ± 0,7 s
spin	1
nuclear quadrupole moment	-1,37 ± 0,03
datum otkrića	1969
parity	-

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

²²⁷Fr

Maseni broj	227
broj neutrona	140
Relative Atomic Mass	227,031865413 ± 0,000006332 Da
g-factor	2,98 ± 0,04
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,47 ± 0,03 m
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1972
parity	+

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

²²⁸Fr

Maseni broj	228
broj neutrona	141
Relative Atomic Mass	228,035839433 ± 0,000007226 Da
g-factor	-0,38 ± 0,005
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	38 ± 1 s
spin	2
nuclear quadrupole moment	2,41 ± 0,06
datum otkrića	1972
parity	-

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

²²⁹Fr

Maseni broj	229
broj neutrona	142
Relative Atomic Mass	229,038291443 ± 0,000005368 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	50,2 ± 0,4 s
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1975
parity	+

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

²³⁰Fr

Maseni broj	230
broj neutrona	143
Relative Atomic Mass	230,042390787 ± 0,000007022 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	19,1 ± 0,5 s
spin	2
nuclear quadrupole moment
datum otkrića	1987
parity	+

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

²³¹Fr

Maseni broj	231
broj neutrona	144
Relative Atomic Mass	231,045175353 ± 0,0000083 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	17,6 ± 0,6 s
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1985
parity	+

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

²³²Fr

Maseni broj	232
broj neutrona	145
Relative Atomic Mass	232,049461219 ± 0,000015 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5,5 ± 0,6 s
spin	5
nuclear quadrupole moment
datum otkrića	1990
parity

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ SF (β⁻-delayed fission)

²³³Fr

Maseni broj	233
broj neutrona	146
Relative Atomic Mass	233,052517833 ± 0,000021 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	900 ± 100 ms
spin	1/2
nuclear quadrupole moment	0
datum otkrića	2010
parity	+

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

historija

otkrivač ili izumitelj	Marguerite Derey
mjesto otkrića	France
datum otkrića	1939
Etimologija	Named for France, the nation of its discovery.
pronunciation	FRAN-si-em (engleski)

izvor

Abundance
Abundance in Earth's crust
natural abundance (okean)
natural abundance (ljudsko tijelo)	0 %
natural abundance (Meteoroidi)
natural abundance (Sunce)
Abundance in Universe	0 %

Nuclear Screening Constants

Francij[um] on ChemicalAid

Australian Educational Vocabulary ID	scot/3521
Brockhaus Enzyklopädie online ID	francium
CAS broj	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
French Vikidia ID	Francium
GND	4155153-9
Gran Enciclopèdia Catalana ID	0110219
Gran Enciclopèdia Catalana ID	0027925
Great Russian Encyclopedia Online ID	4735985
ID Quora teme	Francium
ID na KBpediji	Francium
InChIKey	KLMCZVJOEAUDNE-UHFFFAOYSA-N
InChl	InChI=1S/Fr
LCCN	sh85051541
MeSH ID	D005605
NE.se ID	francium
National Library of Israel J9U ID	987007550763805171
OmegaWiki određeno značenje	159016
PSH ID	5749
PubChem ID (CID)	6328145
Store norske leksikon ID	francium
Treccani ID	francio
UNII	15TEQ7D2QF
USGS Thesaurus ID	1457
WordNet 3.1 Synset ID	14662042-n
broj na Freebaseu	/m/025rqcb

Francij[um] (Fr)

Physical Property

Chemical Property

other

Isotopes of Francium

197Fr

198Fr

199Fr

200Fr

201Fr

202Fr

203Fr

204Fr

205Fr

206Fr

207Fr

208Fr

209Fr

210Fr

211Fr

212Fr

213Fr

214Fr

215Fr

216Fr

217Fr

218Fr

219Fr

220Fr

221Fr

222Fr

223Fr

224Fr

225Fr

226Fr

227Fr

228Fr

229Fr

230Fr

231Fr

232Fr

233Fr

historija

izvor

Nuclear Screening Constants

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