Изотопи на астатот

Астатот (85At) има 41 познат изотоп, од кои сите се радиоактивни. Нивните масени броеви се движат од 188 до 229 (иако 189At е неоткриен). Исто така, постојат 24 познати метастабилни возбудени состојби. Најдолговечниот изотоп е 210At, кој има време на полураспад од 8,1 часа. Најдолготрајниот изотоп што постои во природно настанатите распадни низи е 219At со време на полураспад од 56 секунди.

Список на изотопи

|-id=Астат-188 | rowspan=2|188At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 103 | rowspan=2| | rowspan=2| | α (~50%) | 184Bi | rowspan=2| | rowspan=2| |- | p (~50%) | 187Po |-id=Астат-190 | 190At | style="text-align:right" | 85 | style="text-align:right" | 105

| α | 186Bi | (10−) | |-id=Астат-191 | 191At | style="text-align:right" | 85 | style="text-align:right" | 106

| α | 187Bi | (1/2+) | |-id=Астат-191m | style="text-indent:1em" | 191mAt | colspan="3" style="text-indent:2em" | 50(30) keV | | α | 187Bi | (7/2−) | |-id=Астат-192 | rowspan=3|192At | rowspan=3 style="text-align:right" | 85 | rowspan=3 style="text-align:right" | 107 | rowspan=3|192,00314(28) | rowspan=3|11,5(6) ms | α | 188Bi | rowspan=3|3+# | rowspan=3| |- | β+ (rare) | 192Po |- | β+, СЦ (0,42%) | (various) |-id=Астат-192m | rowspan=3 style="text-indent:1em" | 192mAt | rowspan=3 colspan="3" style="text-indent:2em" | 0(40) keV | rowspan=3| 88(6) ms | α | 188mBi | rowspan=3| (9−, 10−) | rowspan=3| |- | β+ (rare) | 192Po |- | β+, SF (0,42%) | (various) |-id=Астат-193 | 193At | style="text-align:right" | 85 | style="text-align:right" | 108 | 192,99984(6) | | α | 189Bi | (1/2+) | |-id=Астат-193m1 | style="text-indent:1em" | 193m1At | colspan="3" style="text-indent:2em" | 8(9) keV | 21(5) ms | α | 189m1Bi | (7/2−) | |-id=Астат-193m2 | rowspan=2 style="text-indent:1em" | 193m2At | rowspan=2 colspan="3" style="text-indent:2em" | 42(9) keV | rowspan=2| | IT (76%) | 193At | rowspan=2|(13/2+) | rowspan=2| |- | α (24%) | 189m2Bi |-id=Астат-194 | rowspan=3|194At | rowspan=3 style="text-align:right" | 85 | rowspan=3 style="text-align:right" | 109 | rowspan=3|193,99873(20) | rowspan=3|286(7) ms | α (91,7%#) | 190Bi | rowspan=3|(5-) | rowspan=3| |- | β+ (8,3%#) | 194Po |- | β+, SF (0,032%#) | (various) |-id=Астат-194m | rowspan=3 style="text-indent:1em" | 194mAt | rowspan=3 colspan="3" style="text-indent:2em" | -20(40) keV | rowspan=3|323(7) ms | α (91,7%#) | 190Bi | rowspan=3|(10-) | rowspan=3| |- | β+ (8,3%#) | 194Po |- | β+, SF (0,032%#) | (various) |-id=Астат-195 | rowspan=2|195At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 110 | rowspan=2|194,996268(10) | rowspan=2|290(20) ms | α | 191mBi | rowspan=2|(1/2+) | rowspan=2| |- | β+? | 195Po |-id=Астат-195m | rowspan=3 style="text-indent:1em" | 195mAt | rowspan=3 colspan="3" style="text-indent:2em" | 29(7) keV | rowspan=3|143(3) ms | α (88%) | 191Bi | rowspan=3|(7/2-) | rowspan=3| |- | IT (12%) | 195At |- | β+? | 195Po |-id=Астат-196 | rowspan=2|196At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 111 | rowspan=2|195,99579(6) | rowspan=2|377(4) ms | α (97,5%) | 192Bi | rowspan=2|(3+) | rowspan=2| |- | β+ (2,5%) | 196Po |-id=Астат-196m1 | style="text-indent:1em" | 196m1At | colspan="3" style="text-indent:2em" | −40(40) keV | 20# ms | α | 192mBi | (10−) | |-id=Астат-196m2 | style="text-indent:1em" | 196m2At | colspan="3" style="text-indent:2em" | 157,9(1) keV | 11(2) μs | IT | 196At | (5+) | |-id=Астат-197 | rowspan=2|197At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 112 | rowspan=2|196,99319(5) | rowspan=2|388,2(5,6) ms | α (96,1%) | 193Bi | rowspan=2|(9/2−) | rowspan=2| |- | β+ (3,9%) | 197Po |-id=Астат-197m1 | rowspan=3 style="text-indent:1em" | 197m1At | rowspan=3 colspan="3" style="text-indent:2em" | 45(8) keV | rowspan=3|2,0(2) s | α | 193m1Bi | rowspan=3|(1/2+) | rowspan=3| |- | IT (<0,004%) | 197At |- | β+? | 197Po |-id=Астат-197m2 | style="text-indent:1em" | 197m2At | colspan="3" style="text-indent:2em" | 310,7(2) keV | 1,3(2) μs | IT | 197At | (13/2+) | |-id=Астат-198 | rowspan=2|198At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 113 | rowspan=2|197,99284(5) | rowspan=2|4,2(3) s | α (94%) | 194Bi | rowspan=2|(3+) | rowspan=2| |- | β+ (6%) | 198Po |-id=Астат-198m | style="text-indent:1em" | 198mAt | colspan="3" style="text-indent:2em" | 330(90)# keV | 1,0(2) s

| (10−) | |-id=Астат-199 | rowspan=2|199At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 114 | rowspan=2|198,99053(5) | rowspan=2|6,92(13) s | α (89%) | 195Bi | rowspan=2|(9/2−) | rowspan=2| |- | β+ (11%) | 199Po |-id=Астат-200 | rowspan=2|200At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 115 | rowspan=2|199,990351(26) | rowspan=2|43,2(9) s | α (57%) | 196Bi | rowspan=2|(3+) | rowspan=2| |- | β+ (43%) | 200Po |-id=Астат-200m1 | rowspan=3 style="text-indent:1em" | 200m1At | rowspan=3 colspan="3" style="text-indent:2em" | 112,7(30) keV | rowspan=3|47(1) s | α (43%) | 196Bi | rowspan=3|(7+) | rowspan=3| |- | IT | 200At |- | β+ | 200Po |-id=Астат-200m2 | style="text-indent:1em" | 200m2At | colspan="3" style="text-indent:2em" | 344(3) keV | 3,5(2) s

| (10−) | |-id=Астат-201 | rowspan=2|201At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 116 | rowspan=2|200,988417(9) | rowspan=2|85(3) s | α (71%) | 197Bi | rowspan=2|(9/2−) | rowspan=2| |- | β+ (29%) | 201Po |-id=Астат-202 | rowspan=2|202At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 117 | rowspan=2|201,98863(3) | rowspan=2|184(1) s | β+ (88%) | 202Po | rowspan=2|(2, 3)+ | rowspan=2| |- | α (12%) | 198Bi |-id=Астат-202m1 | style="text-indent:1em" | 202m1At | colspan="3" style="text-indent:2em" | 190(40) keV | 182(2) s

| (7+) | |-id=Астат-202m2 | style="text-indent:1em" | 202m2At | colspan="3" style="text-indent:2em" | 580(40) keV | 460(50) ms

| (10−) | |-id=Астат-203 | rowspan=2|203At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 118 | rowspan=2|202,986942(13) | rowspan=2|7,37(13) min | β+ (69%) | 203Po | rowspan=2|9/2− | rowspan=2| |- | α (31%) | 199Bi |-id=Астат-204 | rowspan=2|204At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 119 | rowspan=2|203,987251(26) | rowspan=2|9,2(2) min | β+ (96%) | 204Po | rowspan=2|7+ | rowspan=2| |- | α (3,8%) | 200Bi |-id=Астат-204m | style="text-indent:1em" | 204mAt | colspan="3" style="text-indent:2em" | 587,30(20) keV | 108(10) ms | IT | 204At | (10−) | |-id=Астат-205 | rowspan=2|205At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 120 | rowspan=2|204,986074(16) | rowspan=2|26,2(5) min | β+ (90%) | 205Po | rowspan=2|9/2− | rowspan=2| |- | α (10%) | 201Bi |-id=Астат-205m | style="text-indent:1em" | 205mAt | colspan="3" style="text-indent:2em" | 2339,65(23) keV | 7,76(14) μs

| 29/2+ | |-id=Астат-206 | rowspan=2|206At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 121 | rowspan=2|205,986667(22) | rowspan=2|30,6(13) min | β+ (99,11%) | 206Po | rowspan=2|(5)+ | rowspan=2| |- | α (0,9%) | 202Bi |-id=Астат-206m | style="text-indent:1em" | 206mAt | colspan="3" style="text-indent:2em" | 807(3) keV | 410(80) ns

| (10)− | |-id=Астат-207 | rowspan=2|207At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 122 | rowspan=2|206,985784(23) | rowspan=2|1,80(4) h | β+ (91%) | 207Po | rowspan=2|9/2− | rowspan=2| |- | α (8,6%) | 203Bi |-id=Астат-208 | rowspan=2|208At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 123 | rowspan=2|207,986590(28) | rowspan=2|1,63(3) h | β+ (99,5%) | 208Po | rowspan=2|6+ | rowspan=2| |- | α (0,55%) | 204Bi |-id=Астат-209 | rowspan=2|209At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 124 | rowspan=2|208,986173(8) | rowspan=2|5,41(5) h | β+ (96%) | 209Po | rowspan=2|9/2− | rowspan=2| |- | α (4,0%) | 205Bi |-id=Астат-210 | rowspan=2|210At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 125 | rowspan=2|209,987148(8) | rowspan=2|8,1(4) h | β+ (99,8%) | 210Po | rowspan=2|(5)+ | rowspan=2| |- | α (0,18%) | 206Bi |-id=Астат-210m1 | style="text-indent:1em" | 210m1At | colspan="3" style="text-indent:2em" | 2549,6(2) keV | 482(6) μs

| (15)− | |-id=Астат-210m2 | style="text-indent:1em" | 210m2At | colspan="3" style="text-indent:2em" | 4027,7(2) keV | 5,66(7) μs

| (19)+ | |-id=Астат-211 | rowspan=2|211At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 126 | rowspan=2|210,9874963(30) | rowspan=2|7,214(7) h | EC (58,2%) | 211Po | rowspan=2|9/2− | rowspan=2| |- | α (42%) | 207Bi |-id=Астат-212 | 212At | style="text-align:right" | 85 | style="text-align:right" | 127 | 211,990745(8) | 314(2) ms | αТеоретски способен за β+ распад до 212Po или β− распад до 212Rn | 208Bi | (1−) | |-id=Астат-212m1 | style="text-indent:1em" | 212m1At | colspan="3" style="text-indent:2em" | 223(7) keV | 119(3) ms | α | 208Bi | (9−) | |-id=Астат-212m2 | style="text-indent:1em" | 212m2At | colspan="3" style="text-indent:2em" | 4771,6(11) keV | 152(5) μs | IT | 212At | (25−) | |-id=Астат-213 | 213At | style="text-align:right" | 85 | style="text-align:right" | 128 | 212,992937(5) | 125(6) ns | αТеоретски способен за електронски зафат на 213Po | 209Bi | 9/2− | |-id=Астат-214 | 214At | style="text-align:right" | 85 | style="text-align:right" | 129 | 213,996372(5) | 558(10) ns | α | 210Bi | 1− | |-id=Астат-214m1 | style="text-indent:1em" | 214m1At | colspan="3" style="text-indent:2em" | 59(9) keV | 265(30) ns | αТеоретски способен за јадрен преод до 214At | 210Bi

|-id=Астат-214m2 | style="text-indent:1em" | 214m2At | colspan="3" style="text-indent:2em" | 232(5) keV | 760(15) ns | α | 210Bi | 9− | |-id=Астат-215 | 215At | style="text-align:right" | 85 | style="text-align:right" | 130 | 214,998653(7) | 0,10(2) ms | α | 211Bi | 9/2− | Трагираспаден меѓупроизвод на 235U |-id=Астат-216 | 216At | style="text-align:right" | 85 | style="text-align:right" | 131 | 216,002423(4) | 0,30(3) ms | αТеоретски способен за електронски зафат до 216Po или β− распад до 216Rn | 212Bi | 1− | |-id=Астат-216m | style="text-indent:1em" | 216mAt | colspan="3" style="text-indent:2em" | 161(11) keV | 100# μs | α | 212Bi | 9−# | |-id=Астат-217 | rowspan=2|217At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 132 | rowspan=2|217,004719(5) | rowspan=2|32,3(4) ms | α (99,98%) | 213Bi | rowspan=2|9/2− | rowspan=2|ТрагиРаспаден меѓупроизвод на 237Np |- | β− (,012%) | 217Rn |-id=Астат-218 | rowspan=2|218At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 133 | rowspan=2|218,008694(12) | rowspan=2|1,27(6) s | α (99,9%) | 214Bi | rowspan=2|(2−,3−) | rowspan=2|ТрагиРаспаден меѓупроизвод на 238U |- | β− (0,1%) | 218Rn |-id=Астат-219 | rowspan=2|219At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 134 | rowspan=2|219,011162(4) | rowspan=2|56(3) s | α (97%) | 215Bi | rowspan=2|(9/2−) | rowspan=2|Траги |- | β− (3,0%) | 219Rn |-id=Астат-220 | rowspan=2|220At | rowspan=2 style="text-align:right" | 85 | rowspan=2 style="text-align:right" | 135 | rowspan=2|220,015433(15) | rowspan=2|3,71(4) min | β− (92%) | 220Rn | rowspan=2|3(−#) | rowspan=2| |- | α (8,0%) | 216Bi |-id=Астат-221 | 221At | style="text-align:right" | 85 | style="text-align:right" | 136 | 221,018017(15) | 2,3(2) min | β− | 221Rn | 3/2−# | |-id=Астат-222 | 222At | style="text-align:right" | 85 | style="text-align:right" | 137 | 222,022494(17) | 54(10) s | β− | 222Rn

|-id=Астат-223 | 223At | style="text-align:right" | 85 | style="text-align:right" | 138 | 223,025151(15) | 50(7) s | β− | 223Rn | 3/2−# | |-id=Астат-224 | 224At | style="text-align:right" | 85 | style="text-align:right" | 139 | 224,029749(24)