Astato

Astato (At)

chemical element with symbol At and atomic number 85
Atomic Number85
Atomic Weight210
Numero masico191
Group17
Period6
Blockp
Protón85 p+
Neutrón106 n0
Electrón85 e-
Animated Modelo atomico de Bohr of At (Astato)

Physical Property

Radio Atomico
molar volume
Radio covalent
Metallic Radius
Radio ionico
Crystal Radius
Radio de van der Waals
density

Chemical Property

enerchía
proton affinity
Afinidat electronica
ionization energy
ionization energy of At (Astato)
Entalpía de vaporización
entalpía de fusión
standard enthalpy of formation
Electrón
electron shell2, 8, 18, 32, 18, 7
Modelo atomico de Bohr: At (Astato)
valence electron7
Lewis structure: At (Astato)
electron configuration[Xe] 4f14 5d10 6s2 6p5
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p5
Enhanced Modelo atomico de Bohr of At (Astato)
Orbital Diagram of At (Astato)
Numero d'oxidación-1, 1, 3, 5, 7
Electronegatividat
2.2
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
Punto triple
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
Curie temperature
Néel temperature
structure
Crystal Structure{ERROR}
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryHalogens, Halogens
CAS GroupVIIB
IUPAC GroupVIIA
Glawe Number98
Mendeleev Number110
Pettifor Number96
Geochemical ClassU/Th decay series
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
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

Numero masico191
neutron number106
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
2.1 ± 0.8 ms
spin1/2
nuclear quadrupole moment
0
time of discovery or invention2003
parity+

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

192At

Numero masico192
neutron number107
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
11.5 ± 0.6 ms
spin3
nuclear quadrupole moment
time of discovery or invention2006
parity+

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

193At

Numero masico193
neutron number108
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
29 ± 5 ms
spin1/2
nuclear quadrupole moment
0
time of discovery or invention2003
parity+

decay modeintensity
α (α emission)100%

194At

Numero masico194
neutron number109
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
286 ± 7 ms
spin5
nuclear quadrupole moment
time of discovery or invention2009
parity-

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

195At

Numero masico195
neutron number110
Relative Atomic Mass
g-factor
3.2 ± 0.1
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
290 ± 20 ms
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1999
parity+

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

196At

Numero masico196
neutron number111
Relative Atomic Mass
g-factor
1.24 ± 0.046666666666667
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
377 ± 4 ms
spin3
nuclear quadrupole moment
-0.6 ± 0.4
time of discovery or invention1967
parity+

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

197At

Numero masico197
neutron number112
Relative Atomic Mass
g-factor
0.85111111111111 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
388.2 ± 5.6 ms
spin9/2
nuclear quadrupole moment
-1.2 ± 0.6
time of discovery or invention1967
parity-

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

198At

Numero masico198
neutron number113
Relative Atomic Mass
g-factor
1.34 ± 0.046666666666667
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
4.47 ± 0.05 s
spin3
nuclear quadrupole moment
-0.6 ± 0.3
time of discovery or invention1967
parity+

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

199At

Numero masico199
neutron number114
Relative Atomic Mass
g-factor
0.87555555555556 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
7.02 ± 0.12 s
spin9/2
nuclear quadrupole moment
-1 ± 0.5
time of discovery or invention1967
parity-

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

200At

Numero masico200
neutron number115
Relative Atomic Mass
g-factor
1.4266666666667 ± 0.05
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
43.2 ± 0.9 s
spin3
nuclear quadrupole moment
-0.5 ± 0.5
time of discovery or invention1963
parity+

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

201At

Numero masico201
neutron number116
Relative Atomic Mass
g-factor
0.89111111111111 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
85.2 ± 1.6 s
spin9/2
nuclear quadrupole moment
-1 ± 0.5
time of discovery or invention1963
parity-

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

202At

Numero masico202
neutron number117
Relative Atomic Mass
g-factor
1.38 ± 0.053333333333333
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
184 ± 1 s
spin3
nuclear quadrupole moment
-0.5 ± 0.3
time of discovery or invention1961
parity+

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

203At

Numero masico203
neutron number118
Relative Atomic Mass
g-factor
0.88888888888889 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
7.4 ± 0.2 m
spin9/2
nuclear quadrupole moment
-0.7 ± 0.4
time of discovery or invention1951
parity-

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

204At

Numero masico204
neutron number119
Relative Atomic Mass
g-factor
0.68857142857143 ± 0.025714285714286
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
9.12 ± 0.11 m
spin7
nuclear quadrupole moment
-0.6 ± 0.3
time of discovery or invention1961
parity+

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

205At

Numero masico205
neutron number120
Relative Atomic Mass
g-factor
0.90888888888889 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
26.9 ± 0.8 m
spin9/2
nuclear quadrupole moment
-0.6 ± 0.3
time of discovery or invention1951
parity-

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

206At

Numero masico206
neutron number121
Relative Atomic Mass
g-factor
0.72833333333333 ± 0.028333333333333
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
30.6 ± 0.8 m
spin6
nuclear quadrupole moment
-0.4 ± 0.2
time of discovery or invention1961
parity

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

207At

Numero masico207
neutron number122
Relative Atomic Mass
g-factor
0.91777777777778 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
1.81 ± 0.03 h
spin9/2
nuclear quadrupole moment
-0.5 ± 0.3
time of discovery or invention1951
parity-

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

208At

Numero masico208
neutron number123
Relative Atomic Mass
g-factor
0.74333333333333 ± 0.03
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
1.63 ± 0.03 h
spin6
nuclear quadrupole moment
-0.4 ± 0.3
time of discovery or invention1950
parity+

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

209At

Numero masico209
neutron number124
Relative Atomic Mass
g-factor
0.91555555555556 ± 0.015555555555556
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
5.42 ± 0.05 h
spin9/2
nuclear quadrupole moment
-0.4 ± 0.2
time of discovery or invention1951
parity-

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

210At

Numero masico210
neutron number125
Relative Atomic Mass
g-factor
0.944 ± 0.032
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
8.1 ± 0.4 h
spin5
nuclear quadrupole moment
-0.4 ± 0.2
time of discovery or invention1949
parity

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

211At

Numero masico211
neutron number126
Relative Atomic Mass
g-factor
0.92 ± 0.0088888888888889
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
7.214 ± 0.007 h
spin9/2
nuclear quadrupole moment
time of discovery or invention1940
parity-

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

212At

Numero masico212
neutron number127
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
314 ± 3 ms
spin1
nuclear quadrupole moment
time of discovery or invention1954
parity-

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

213At

Numero masico213
neutron number128
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
125 ± 6 ns
spin9/2
nuclear quadrupole moment
time of discovery or invention1968
parity-

decay modeintensity
α (α emission)100%

214At

Numero masico214
neutron number129
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
558 ± 10 ns
spin1
nuclear quadrupole moment
time of discovery or invention1949
parity-

decay modeintensity
α (α emission)100%

215At

Numero masico215
neutron number130
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
37 ± 3 us
spin9/2
nuclear quadrupole moment
time of discovery or invention1944
parity-

decay modeintensity
α (α emission)100%

216At

Numero masico216
neutron number131
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
300 ± 30 us
spin1
nuclear quadrupole moment
time of discovery or invention1948
parity-

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

217At

Numero masico217
neutron number132
Relative Atomic Mass
g-factor
0.84444444444444 ± 0.044444444444444
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
32.6 ± 0.3 ms
spin9/2
nuclear quadrupole moment
time of discovery or invention1947
parity-

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

218At

Numero masico218
neutron number133
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
1.28 ± 0.06 s
spin2
nuclear quadrupole moment
time of discovery or invention1943
parity-

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

219At

Numero masico219
neutron number134
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
56 ± 3 s
spin9/2
nuclear quadrupole moment
time of discovery or invention1953
parity-

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

220At

Numero masico220
neutron number135
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
3.71 ± 0.04 m
spin3
nuclear quadrupole moment
time of discovery or invention1989
parity-

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

221At

Numero masico221
neutron number136
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
2.3 ± 0.2 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1989
parity-

decay modeintensity
β (β decay)100%

222At

Numero masico222
neutron number137
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
54 ± 10 s
spin
nuclear quadrupole moment
time of discovery or invention1989
parity

decay modeintensity
β (β decay)100%

223At

Numero masico223
neutron number138
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
50 ± 7 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1989
parity-

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

224At

Numero masico224
neutron number139
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
2.5 ± 1.5 m
spin2
nuclear quadrupole moment
time of discovery or invention2010
parity+

decay modeintensity
β (β decay)100%

225At

Numero masico225
neutron number140
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin1/2
nuclear quadrupole moment
0
time of discovery or invention2010
parity+

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

226At

Numero masico226
neutron number141
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin2
nuclear quadrupole moment
time of discovery or invention2010
parity+

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

227At

Numero masico227
neutron number142
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin1/2
nuclear quadrupole moment
0
time of discovery or invention2010
parity+

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

228At

Numero masico228
neutron number143
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin3
nuclear quadrupole moment
time of discovery or invention2010
parity+

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

229At

Numero masico229
neutron number144
Relative Atomic Mass
g-factor
natural abundance
Radioactividat☢️ radioactive element
Periodo de semidesintegración
spin1/2
nuclear quadrupole moment
0
time of discovery or invention2010
parity+

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

historia

discoverer or inventorD.R.Corson, K.R.MacKenzie, E.Segré
location of discoveryUnited States
time of discovery or invention1940
EtimolochíaGreek: astatos (unstable).
pronunciationAS-teh-teen (English)

source

Abundance
Abundance in Earth's crust
natural abundance (ocián)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Sol)
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