Astatin

Astatin (At)

chemical element with symbol At and atomic number 85
Atomic Number85
Atomic Weight210
Hejmara baristeyî191
Group17
Period6
Blockp
Proton85 p+
Notron106 n0
Kareva85 e-
Animated Bohr model of At (Astatin)

Physical Property

Atomic Radius
molar volume
Covalent Radius
147 pm
Metallic Radius
ionic radius
62 pm
Crystal Radius
76 pm
Van der Waals radius
202 pm
density

Chemical Property

wize
proton affinity
electron affinity
ionization energy
9,31751 eV/particle
ionization energy of At (Astatin)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Kareva
electron shell2, 8, 18, 32, 18, 7
Bohr model: At (Astatin)
valence electron7
Lewis structure: At (Astatin)
electron configuration[Xe] 4f14 5d10 6s2 6p5
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p5
Enhanced Bohr model of At (Astatin)
Orbital Diagram of At (Astatin)
oxidation number-1, 1, 3, 5, 7
electronegativity
2.2
Electrophilicity Index
2,8161454412824063 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
575,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearanceunknown, probably metallic
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Leza dengê
classification
CategoryHalogens, Halogens
CAS GroupVIIB
IUPAC GroupVIIA
Glawe Number98
Mendeleev Number110
Pettifor Number96
Geochemical ClassU/Th decay series
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
42 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number2P3/2
space group ()

Isotopes of Astatine

Stable Isotopes0
Unstable Isotopes39
Natural Isotopes0

191At

Hejmara baristeyî191
neutron number106
Giraniya atomê
191,004148081 ± 0,000017287 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,1 ± 0,8 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2003
parity+

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

192At

Hejmara baristeyî192
neutron number107
Giraniya atomê
192,003140912 ± 0,000029922 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
11,5 ± 0,6 ms
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê2006
parity+

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)
β+ SF (β+-delayed fission)0.51%

193At

Hejmara baristeyî193
neutron number108
Giraniya atomê
192,999927725 ± 0,000023222 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
29 ± 5 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2003
parity+

decay modeintensity
α (α emission)100%

194At

Hejmara baristeyî194
neutron number109
Giraniya atomê
193,999230816 ± 0,00002523 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
286 ± 7 ms
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê2009
parity-

decay modeintensity
α (α emission)100%
β+ (β+ decay; β+ = ϵ + e+)8.3%
β+ SF (β+-delayed fission)0.032%

195At

Hejmara baristeyî195
neutron number110
Giraniya atomê
194,99627448 ± 0,000010276 Da
g-factor
3,2 ± 0,1
natural abundance
radioactivity☢️ radioactive element
half-life
290 ± 20 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1999
parity+

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

196At

Hejmara baristeyî196
neutron number111
Giraniya atomê
195,995799034 ± 0,000032458 Da
g-factor
1,24 ± 0,046666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
377 ± 4 ms
spin3
nuclear quadrupole moment
-0,6 ± 0,4
dema îcadkirinê yan keşfê1967
parity+

decay modeintensity
α (α emission)97.5%
β+ (β+ decay; β+ = ϵ + e+)
β+ SF (β+-delayed fission)0.009%

197At

Hejmara baristeyî197
neutron number112
Giraniya atomê
196,993177353 ± 0,00000857 Da
g-factor
0,85111111111111 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
388,2 ± 5,6 ms
spin9/2
nuclear quadrupole moment
-1,2 ± 0,6
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
α (α emission)96.1%
β+ (β+ decay; β+ = ϵ + e+)3.9%

198At

Hejmara baristeyî198
neutron number113
Giraniya atomê
197,992797864 ± 0,000005265 Da
g-factor
1,34 ± 0,046666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
4,47 ± 0,05 s
spin3
nuclear quadrupole moment
-0,6 ± 0,3
dema îcadkirinê yan keşfê1967
parity+

decay modeintensity
α (α emission)97%
β+ (β+ decay; β+ = ϵ + e+)

199At

Hejmara baristeyî199
neutron number114
Giraniya atomê
198,990527715 ± 0,00000578 Da
g-factor
0,87555555555556 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
7,02 ± 0,12 s
spin9/2
nuclear quadrupole moment
-1 ± 0,5
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
α (α emission)89%
β+ (β+ decay; β+ = ϵ + e+)

200At

Hejmara baristeyî200
neutron number115
Giraniya atomê
199,990351099 ± 0,000026264 Da
g-factor
1,4266666666667 ± 0,05
natural abundance
radioactivity☢️ radioactive element
half-life
43,2 ± 0,9 s
spin3
nuclear quadrupole moment
-0,5 ± 0,5
dema îcadkirinê yan keşfê1963
parity+

decay modeintensity
α (α emission)52%
β+ (β+ decay; β+ = ϵ + e+)48%

201At

Hejmara baristeyî201
neutron number116
Giraniya atomê
200,988417058 ± 0,000008786 Da
g-factor
0,89111111111111 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
85,2 ± 1,6 s
spin9/2
nuclear quadrupole moment
-1 ± 0,5
dema îcadkirinê yan keşfê1963
parity-

decay modeintensity
α (α emission)71%
β+ (β+ decay; β+ = ϵ + e+)29%

202At

Hejmara baristeyî202
neutron number117
Giraniya atomê
201,988625686 ± 0,000029631 Da
g-factor
1,38 ± 0,053333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
184 ± 1 s
spin3
nuclear quadrupole moment
-0,5 ± 0,3
dema îcadkirinê yan keşfê1961
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)88%
α (α emission)12%

203At

Hejmara baristeyî203
neutron number118
Giraniya atomê
202,986942904 ± 0,000011404 Da
g-factor
0,88888888888889 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
7,4 ± 0,2 m
spin9/2
nuclear quadrupole moment
-0,7 ± 0,4
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)69%
α (α emission)31%

204At

Hejmara baristeyî204
neutron number119
Giraniya atomê
203,987251393 ± 0,000024335 Da
g-factor
0,68857142857143 ± 0,025714285714286
natural abundance
radioactivity☢️ radioactive element
half-life
9,12 ± 0,11 m
spin7
nuclear quadrupole moment
-0,6 ± 0,3
dema îcadkirinê yan keşfê1961
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)96.2%
α (α emission)3.8%

205At

Hejmara baristeyî205
neutron number120
Giraniya atomê
204,986060546 ± 0,000012941 Da
g-factor
0,90888888888889 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
26,9 ± 0,8 m
spin9/2
nuclear quadrupole moment
-0,6 ± 0,3
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)90%
α (α emission)10%

206At

Hejmara baristeyî206
neutron number121
Giraniya atomê
205,986645768 ± 0,000014523 Da
g-factor
0,72833333333333 ± 0,028333333333333
natural abundance
radioactivity☢️ radioactive element
half-life
30,6 ± 0,8 m
spin6
nuclear quadrupole moment
-0,4 ± 0,2
dema îcadkirinê yan keşfê1961
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.1%
α (α emission)0.9%

207At

Hejmara baristeyî207
neutron number122
Giraniya atomê
206,985799715 ± 0,000013318 Da
g-factor
0,91777777777778 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
1,81 ± 0,03 h
spin9/2
nuclear quadrupole moment
-0,5 ± 0,3
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)90%
α (α emission)10%

208At

Hejmara baristeyî208
neutron number123
Giraniya atomê
207,986613011 ± 0,000009577 Da
g-factor
0,74333333333333 ± 0,03
natural abundance
radioactivity☢️ radioactive element
half-life
1,63 ± 0,03 h
spin6
nuclear quadrupole moment
-0,4 ± 0,3
dema îcadkirinê yan keşfê1950
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.45%
α (α emission)0.55%

209At

Hejmara baristeyî209
neutron number124
Giraniya atomê
208,986168701 ± 0,000005094 Da
g-factor
0,91555555555556 ± 0,015555555555556
natural abundance
radioactivity☢️ radioactive element
half-life
5,42 ± 0,05 h
spin9/2
nuclear quadrupole moment
-0,4 ± 0,2
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)96.1%
α (α emission)3.9%

210At

Hejmara baristeyî210
neutron number125
Giraniya atomê
209,987147423 ± 0,000008261 Da
g-factor
0,944 ± 0,032
natural abundance
radioactivity☢️ radioactive element
half-life
8,1 ± 0,4 h
spin5
nuclear quadrupole moment
-0,4 ± 0,2
dema îcadkirinê yan keşfê1949
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.825%
α (α emission)0.175%

211At

Hejmara baristeyî211
neutron number126
Giraniya atomê
210,987496226 ± 0,000002929 Da
g-factor
0,92 ± 0,0088888888888889
natural abundance
radioactivity☢️ radioactive element
half-life
7,214 ± 0,007 h
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1940
parity-

decay modeintensity
ϵ (electron capture)58.2%
α (α emission)41.8%

212At

Hejmara baristeyî212
neutron number127
Giraniya atomê
211,990737301 ± 0,000002559 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
314 ± 3 ms
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1954
parity-

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

213At

Hejmara baristeyî213
neutron number128
Giraniya atomê
212,992936593 ± 0,000005258 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
125 ± 6 ns
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1968
parity-

decay modeintensity
α (α emission)100%

214At

Hejmara baristeyî214
neutron number129
Giraniya atomê
213,996372331 ± 0,000004274 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
558 ± 10 ns
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1949
parity-

decay modeintensity
α (α emission)100%

215At

Hejmara baristeyî215
neutron number130
Giraniya atomê
214,998651002 ± 0,000007116 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
37 ± 3 us
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1944
parity-

decay modeintensity
α (α emission)100%

216At

Hejmara baristeyî216
neutron number131
Giraniya atomê
216,002422643 ± 0,000003837 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
300 ± 30 us
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1948
parity-

decay modeintensity
α (α emission)100%
β (β decay)
ϵ (electron capture)

217At

Hejmara baristeyî217
neutron number132
Giraniya atomê
217,004717794 ± 0,000005368 Da
g-factor
0,84444444444444 ± 0,044444444444444
natural abundance
radioactivity☢️ radioactive element
half-life
32,6 ± 0,3 ms
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1947
parity-

decay modeintensity
α (α emission)99.992%
β (β decay)0.008%

218At

Hejmara baristeyî218
neutron number133
Giraniya atomê
218,008695941 ± 0,000012349 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,28 ± 0,06 s
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1943
parity-

decay modeintensity
α (α emission)100%
β (β decay)

219At

Hejmara baristeyî219
neutron number134
Giraniya atomê
219,011160587 ± 0,000003474 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
56 ± 3 s
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1953
parity-

decay modeintensity
α (α emission)93.6%
β (β decay)6.4%

220At

Hejmara baristeyî220
neutron number135
Giraniya atomê
220,015433 ± 0,000015 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,71 ± 0,04 m
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity-

decay modeintensity
β (β decay)92%
α (α emission)8%

221At

Hejmara baristeyî221
neutron number136
Giraniya atomê
221,018017 ± 0,000015 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,3 ± 0,2 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity-

decay modeintensity
β (β decay)100%

222At

Hejmara baristeyî222
neutron number137
Giraniya atomê
222,022494 ± 0,000017 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
54 ± 10 s
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity

decay modeintensity
β (β decay)100%

223At

Hejmara baristeyî223
neutron number138
Giraniya atomê
223,025151 ± 0,000015 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
50 ± 7 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity-

decay modeintensity
β (β decay)100%
α (α emission)

224At

Hejmara baristeyî224
neutron number139
Giraniya atomê
224,029749 ± 0,000024 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,5 ± 1,5 m
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2010
parity+

decay modeintensity
β (β decay)100%

225At

Hejmara baristeyî225
neutron number140
Giraniya atomê
225,032528 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

226At

Hejmara baristeyî226
neutron number141
Giraniya atomê
226,037209 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

227At

Hejmara baristeyî227
neutron number142
Giraniya atomê
227,040183 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

228At

Hejmara baristeyî228
neutron number143
Giraniya atomê
228,04496 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

229At

Hejmara baristeyî229
neutron number144
Giraniya atomê
229,048191 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2010
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Electron shell 085 Astatine

dîrok

kaşîf an îcadkerD.R.Corson, K.R.MacKenzie, E.Segré
location of discoveryUnited States
dema îcadkirinê yan keşfê1940
BêjenasîGreek: astatos (unstable).
pronunciationAS-teh-teen (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Roj)
Abundance in Universe
0 %

Nuclear Screening Constants

1s1.6446
2p4.5524
2s22.3324
3d13.4155
3p23.5024
3s24.6481
4d37.9504
4f37.7596
4p36.516
4s35.6644
5d58.661
5p53.96
5s52.0665
6p69.8368
6s67.7002