At - Astatine

There is, of course, no astatine in our lab. Discovered by Corson, etal., in 1940.

Atomic number - 85 Density g/mL -

Atomic weight u 210 Melting point K 575

Bonding radius A 1 .45 Boiling point K 610

Atomic radius A 1 .43 Heat of vaporization kJ/mol -

Ionization Potential V - Heat of fusion kJ/mol -

Electronegativity - 2 .2 Specific heat J/gK -

The oxide is unknown.
Crystal are unknown.

Electron config. : [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵

Isotopes of At: Click mass number for decay process, product for element page.

194
40 msec
a,7.310 MeV
Bi-190
193.99892 195

a/EC,7.400
Bi-191/Po-195
194.99656 196
0.3 sec
a,7.200 MeV
Bi-192
195.99570 197
0.35 sec
a/EC,7.100
Bi-193/Po-197
196.99323 198
4.2 sec
a/EC,6.893
Bi-194/Po-198
197.99280 199
7.2 sec
a/EC,6.780
Bi-195/Po-199
198.99062 200
43 sec
a/EC,6.596
Bi-196/Po-200
199.99029

201
89 sec
a/EC,6.473
Bi-197/Po-201
200.98849 202
184 sec
a/EC,7.210
Bi-198/Po-202
201.98844 203
7.4 min
a/EC,5.060
Bi-199/Po-203
202.98683 204
9.2 min
a/EC,6.480
Bi-200/Po-204
203.98725 205
26.2 min
a/EC,4.540
Bi-201/Po-205
204.98603 206
30.0 min
a/EC,5.720
Bi-202/Po-206
205.98660 207
1.80 hr
a/EC,3.910
Bi-203/Po-207
206.98577

208
1.63 hr
a/EC,4.973
Bi-204/Po-208
207.98656 209
5.41 hr
a/EC,3.486
Bi-205/Po-209
208.98615 210
8.1 hr
a/EC,3.981
Bi-206/Po-210
209.98713 211
7.214 hr
a/EC,5.982
Bi-207/Po-211
210.98748 212
0.314 sec
a/B-/EC,7.829
Bi-208/Rn-212/Po-212
211.99073 213
125 nsec
a,9.254 MeV
Bi-209
212.99292 214
558 nsec
a,8.987 MeV
Bi-210
213.99635

215
0.10 msec
a,8.178 MeV
Bi-211
214.99864 216
0.30 msec
a/B-/EC,7.949
Bi-212/Rn-216/Po-216
216.00240 217
32.3 msec
a/B-,7.202
Bi-213/Rn-217
217.00470 218
1.5 sec
a/B-,6.874
Bi-214/Rn-218
218.00868 219
56 sec
a/B-,6.390
Bi-215/Rn-219
219.01129 220
3.71 min
a/B-,3.650
Bi-216/Rn-220
220.01529 221
2.3 min
B-,6.405 MeV
Rn-221
221.01789

222
54 sec
B-,4.400 MeV
Rn-222
222.02232 223
50 sec
B-,5.590 MeV
Rn-223
223.02511 MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Atomic number	-	85		Density	g/mL	-
Atomic weight	u	210		Melting point	K	575
Bonding radius	A	1	.45	Boiling point	K	610
Atomic radius	A	1	.43	Heat of vaporization	kJ/mol	-
Ionization Potential	V	-		Heat of fusion	kJ/mol	-
Electronegativity	-	2	.2	Specific heat	J/gK	-
The oxide is unknown.				Crystal are unknown.
Electron config. : [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵

194 40 msec a,7.310 MeV Bi-190 193.99892	195 a/EC,7.400 Bi-191/Po-195 194.99656	196 0.3 sec a,7.200 MeV Bi-192 195.99570	197 0.35 sec a/EC,7.100 Bi-193/Po-197 196.99323	198 4.2 sec a/EC,6.893 Bi-194/Po-198 197.99280	199 7.2 sec a/EC,6.780 Bi-195/Po-199 198.99062	200 43 sec a/EC,6.596 Bi-196/Po-200 199.99029
201 89 sec a/EC,6.473 Bi-197/Po-201 200.98849	202 184 sec a/EC,7.210 Bi-198/Po-202 201.98844	203 7.4 min a/EC,5.060 Bi-199/Po-203 202.98683	204 9.2 min a/EC,6.480 Bi-200/Po-204 203.98725	205 26.2 min a/EC,4.540 Bi-201/Po-205 204.98603	206 30.0 min a/EC,5.720 Bi-202/Po-206 205.98660	207 1.80 hr a/EC,3.910 Bi-203/Po-207 206.98577
208 1.63 hr a/EC,4.973 Bi-204/Po-208 207.98656	209 5.41 hr a/EC,3.486 Bi-205/Po-209 208.98615	210 8.1 hr a/EC,3.981 Bi-206/Po-210 209.98713	211 7.214 hr a/EC,5.982 Bi-207/Po-211 210.98748	212 0.314 sec a/B-/EC,7.829 Bi-208/Rn-212/Po-212 211.99073	213 125 nsec a,9.254 MeV Bi-209 212.99292	214 558 nsec a,8.987 MeV Bi-210 213.99635
215 0.10 msec a,8.178 MeV Bi-211 214.99864	216 0.30 msec a/B-/EC,7.949 Bi-212/Rn-216/Po-216 216.00240	217 32.3 msec a/B-,7.202 Bi-213/Rn-217 217.00470	218 1.5 sec a/B-,6.874 Bi-214/Rn-218 218.00868	219 56 sec a/B-,6.390 Bi-215/Rn-219 219.01129	220 3.71 min a/B-,3.650 Bi-216/Rn-220 220.01529	221 2.3 min B-,6.405 MeV Rn-221 221.01789
222 54 sec B-,4.400 MeV Rn-222 222.02232	223 50 sec B-,5.590 MeV Rn-223 223.02511	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass