라돈 동위 원소

**라돈**은 원자량 193에서 231 사이에 총 39개의 동위 원소가 알려져 있다. 이들 중 가장 안정한 것은 3.823일의 반감기를 가지는 222Rn이다. 218Rn, 219Rn, 220Rn, 222Rn의 네 가지 동위 원소는 자연에 미량 존재하며, 각각 218At, 223Ra, 224Ra, 226Ra의 붕괴 생성물이다. 218Rn과 222Rn는 238U 붕괴 계열의 중간 생성 물질이며, 219Rn는 235U의 붕괴 계열, 220Rn은 232Th의 붕괴 계열 상에 각각 위치한다.
# 표
{| class="wikitable" | 핵종
기호 ! rowspan="2" | 과거 명칭 ! Z(p) ! N(n) !
동위 원소 질량 (u)
! rowspan="2" | 반감기 ! rowspan="2" | 붕괴
방식url-status=약자:
IT: 이성질핵 전이 ! rowspan="2" | 붕괴
생성물 ! rowspan="2" | 핵
스핀 ! rowspan="2" | 전형적
동위 원소
구성비
(몰 분율) ! rowspan="2" | 자연적
구성비
변동 범위
(몰 분율) |- ! colspan="3" | 들뜬 에너지 |- | 195Rn | | | 86 | | 109 | 195.00544(5) | 6 ms | | | 3/2-# | | |- | | 195mRn | | colspan="3" | 50(50) keV | 6 ms | | | 13/2+# | | |- | rowspan=2|196Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 110 | rowspan=2|196.002115(16) | rowspan=2|4.7(11) ms
[4.4(+13-9) ms] | α | 192Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (드묾) | 196At |- | rowspan=2|197Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 111 | rowspan=2|197.00158(7) | rowspan=2|66(16) ms
[65(+25-14) ms] | α | 193Po | rowspan=2|3/2-# | rowspan=2| | rowspan=2| |- | β+ (드묾) | 197At |- | rowspan=2 | 197mRn | rowspan=2| | rowspan=2 colspan="3" | 200(60)# keV | rowspan=2|21(5) ms
[19(+8-4) ms] | α | 193Po | rowspan=2|(13/2+) | rowspan=2| | rowspan=2| |- | β+ (드묾) | 197At |- | rowspan=2|198Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 112 | rowspan=2|197.998679(14) | rowspan=2|65(3) ms | α (99%) | 194Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (1%) | 198At |- | rowspan=2|199Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 113 | rowspan=2|198.99837(7) | rowspan=2|620(30) ms | α (94%) | 195Po | rowspan=2|3/2-# | rowspan=2| | rowspan=2| |- | β+ (6%) | 199At |- | rowspan=2 | 199mRn | rowspan=2| | rowspan=2 colspan="3" | 180(70) keV | rowspan=2|320(20) ms | α (97%) | 195Po | rowspan=2|13/2+# | rowspan=2| | rowspan=2| |- | β+ (3%) | 199At |- | rowspan=2|200Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 114 | rowspan=2|199.995699(14) | rowspan=2|0.96(3) s | α (98%) | 196Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (2%) | 200At |- | rowspan=2|201Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 115 | rowspan=2|200.99563(8) | rowspan=2|7.0(4) s | α (80%) | 197Po | rowspan=2|(3/2-) | rowspan=2| | rowspan=2| |- | β+ (20%) | 201At |- | rowspan=3 | 201mRn | rowspan=3| | rowspan=3 colspan="3" | 280(90)# keV | rowspan=3|3.8(1) s | α (90%) | 197Po | rowspan=3|(13/2+) | rowspan=3| | rowspan=3| |- | β+ (10%) | 201At |- | IT (<1%) | 201Rn |- | rowspan=2|202Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 116 | rowspan=2|201.993263(19) | rowspan=2|9.94(18) s | α (85%) | 198Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (15%) | 202At |- | rowspan=2|203Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 117 | rowspan=2|202.993387(25) | rowspan=2|44.2(16) s | α (66%) | 199Po | rowspan=2|(3/2-) | rowspan=2| | rowspan=2| |- | β+ (34%) | 203At |- | rowspan=2 | 203mRn | rowspan=2| | rowspan=2 colspan="3" | 363(4) keV | rowspan=2|26.7(5) s | α (80%) | 199Po | rowspan=2|13/2(+) | rowspan=2| | rowspan=2| |- | β+ (20%) | 203At |- | rowspan=2|204Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 118 | rowspan=2|203.991429(16) | rowspan=2|1.17(18) min | α (73%) | 200Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (27%) | 204At |- | rowspan=2|205Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 119 | rowspan=2|204.99172(5) | rowspan=2|170(4) s | β+ (77%) | 205At | rowspan=2|5/2- | rowspan=2| | rowspan=2| |- | α (23%) | 201Po |- | rowspan=2|206Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 120 | rowspan=2|205.990214(16) | rowspan=2|5.67(17) min | α (62%) | 202Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (38%) | 206At |- | rowspan=2|207Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 121 | rowspan=2|206.990734(28) | rowspan=2|9.25(17) min | β+ (79%) | 207At | rowspan=2|5/2- | rowspan=2| | rowspan=2| |- | α (21%) | 203Po |- | | 207mRn | | colspan="3" | 899.0(10) keV | 181(18) µs | | | (13/2+) | | |- | rowspan=2|208Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 122 | rowspan=2|207.989642(12) | rowspan=2|24.35(14) min | α (62%) | 204Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (38%) | 208At |- | rowspan=2|209Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 123 | rowspan=2|208.990415(21) | rowspan=2|28.5(10) min | β+ (83%) | 209At | rowspan=2|5/2- | rowspan=2| | rowspan=2| |- | α (17%) | 205Po |- | | 209m1Rn | | colspan="3" | 1173.98(13) keV | 13.4(13) µs | | | 13/2+ | | |- | | 209m2Rn | | colspan="3" | 3636.78(23) keV | 3.0(3) µs | | | (35/2+) | | |- | rowspan=2|210Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 124 | rowspan=2|209.989696(9) | rowspan=2|2.4(1) h | α (96%) | 206Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (4%) | 210At |- | | 210m1Rn | | colspan="3" | 1690(15) keV | 644(40) ns | | | 8+# | | |- | | 210m2Rn | | colspan="3" | 3837(15) keV | 1.06(5) µs | | | (17)- | | |- | | 210m3Rn | | colspan="3" | 6493(15) keV | 1.04(7) µs | | | (22)+ | | |- | rowspan=2|211Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 125 | rowspan=2|210.990601(7) | rowspan=2|14.6(2) h | α (72.6%) | 207Po | rowspan=2|1/2- | rowspan=2| | rowspan=2| |- | β+ (27.4%) | 211At |- | rowspan=2|212Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 126 | rowspan=2|211.990704(3) | rowspan=2|23.9(12) min | α | 208Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+β+ (드묾) | 212Po |- | 213Rn | | | 86 | | 127 | 212.993883(6) | 19.5(1) ms | α | 209Po | (9/2+) | | |- | rowspan=2|214Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 128 | rowspan=2|213.995363(10) | rowspan=2|0.27(2) µs | α | 210Po | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+β+ (드묾) | 214Po |- | | 214mRn | | colspan="3" | 4595.4 keV | 245(30) ns | | | (22+) | | |- | 215Rn | | | 86 | | 129 | 214.998745(8) | 2.30(10) µs | α | 211Po | 9/2+ | | |- | 216Rn | | | 86 | | 130 | 216.000274(8) | 45(5) µs | α | 212Po | 0+ | | |- | 217Rn | | | 86 | | 131 | 217.003928(5) | 0.54(5) ms | α | 213Po | 9/2+ | | |- | 218Rn | | | 86 | | 132 | 218.0056013(25) | 35(5) ms | α | 214Po | 0+ | 미량238U의 중간 붕괴 생성물 | |- | 219Rn | 악티논
악티늄 붕괴물 | | 86 | | 133 | 219.0094802(27) | 3.96(1) s | α | 215Po | 5/2+ | 미량235U의 중간 붕괴 생성물 | |- | rowspan=2|220Rn | rowspan=2|토론
토륨 붕괴물 | rowspan=2 | 86 | rowspan=2 | 134 | rowspan=2|220.0113940(24) | rowspan=2|55.6(1) s | α | 216Po | rowspan=2|0+ | rowspan=2|미량232Th의 중간 붕괴 생성물 | rowspan=2| |- | β-β- (드묾) | 220Ra |- | rowspan=2|221Rn | rowspan=2| | rowspan=2 | 86 | rowspan=2 | 135 | rowspan=2|221.015537(6) | rowspan=2|25.7(5) min | β- (78%) | 221Fr | rowspan=2|7/2(+) | rowspan=2| | rowspan=2| |- | α (22%) | 217Po |- | 222Rn | 라돈여기서 원소 이름 **라돈**을 따온 것이다.
라듐 붕괴물
에마논
니톤 | | 86 | | 136 | 222.0175777(25) | 3.8235(3) d | α | 218Po | 0+ | 미량 | |- | 223Rn | | | 86 | | 137 | 223.02179(32)# | 24.3(4) min | β- | 223Fr | 7/2 | | |- | 224Rn | | | 86 | | 138 | 224.02409(32)# | 107(3) min | β- | 224Fr | 0+ | | |- | 225Rn | | | 86 | | 139 | 225.02844(32)# | 4.66(4) min | β- | 225Fr | 7/2- | | |- | 226Rn | | | 86 | | 140 | 226.03089(43)# | 7.4(1) min | β- | 226Fr | 0+ | | |- | 227Rn | | | 86 | | 141 | 227.03541(45)# | 20.8(7) s | β- | 227Fr | 5/2(+#) | | |- | 228Rn | | | 86 | | 142 | 228.03799(44)# | 65(2) s | β- | 228Fr | 0+ | | |- | 229Rn | | | 86 | | 143 | 229.0426536(141) | 12 s | | | | | |}