{{위키데이터 속성 추적}}
자연계에 존재하는 '''[[백금]]의 [[동위 원소]]'''는 6종으로 <sup>190</sup>Pt, <sup>192</sup>Pt, <sup>194</sup>Pt, <sup>195</sup>Pt, <sup>196</sup>Pt, <sup>198</sup>Pt이 존재한다.
이들 중 <sup>190</sup>Pt는 [[방사성 동위 원소]]로 [[반감기]]가 6500억년으로 우주의 나이의 47배나 되는데, 태양계의 연대 측정을 하는데 쓰여지는 방사성 동위 원소들 중 가장 반감기가 길다.

<sup>192</sup>Pt와 <sup>198</sup>Pt는 반감기를 가지고 있을 것으로 예측되지만 아직 붕괴되는 모습은 관측되지 않았으며, 예상과는 다르게 붕괴하지 않을 수도 있다.

<sup>195</sup>Pt의 [[존재비]]는 33.8%로 백금의 동위 원소들 중 가장 풍부하게 존재한다.

== 표 ==
{| class="wikitable" style="font-size:95%; white-space:nowrap"
! rowspan="2" | 핵자<br />수
! Z([[양성자|p]])
! N([[중성자|n]])
! &nbsp;<br />동위 원소 질량 (u)<br />&nbsp;
! rowspan="2" | 반감기
! rowspan="2" | 붕괴<br />방식<ref group="n">약어:<br />ε: [[전자 포획]]<br />IT: [[이성질핵 전이]]</ref>
! rowspan="2" | 붕괴 생성<br />동위 원소<ref group="n">안정 동위 원소는 굵은 글씨로 표기, 우주의 나이보다 반감기가 긴 동위 원소의 반감기는 굵은 흘림체로 표기</ref>
! rowspan="2" | 핵<br />스핀
! rowspan="2" | 자연계에 존재하는<br />동위 원소<br />범위<br />(몰 분율)
! rowspan="2" | 자연계에 존재하는<br />최대 범위<br />(몰 분율)
|-
! colspan="3" | 들뜬 에너지
|-
| <sup>166</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 88
| 165.99486(54)#
| 300(100) µs
|
|
| 0+
|
|
|-
| <sup>167</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 89
| 166.99298(44)#
| 700(200) µs
|
|
| 7/2-#
|
|
|-
| rowspan=2|<sup>168</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 90
| rowspan=2|167.98815(22)
| rowspan=2|2.00(18) ms
| [[알파 붕괴|α]]
| <sup>164</sup>Os
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| [[베타 붕괴|β<sup>+</sup>]] (드묾)
| <sup>168</sup>Ir
|-
| rowspan=2|<sup>169</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 91
| rowspan=2|168.98672(22)#
| rowspan=2|3.7(15) ms
| α
| <sup>165</sup>Os
| rowspan=2|3/2-#
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (드묾)
| <sup>169</sup>Ir
|-
| rowspan=2|<sup>170</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 92
| rowspan=2|169.982495(20)
| rowspan=2|14.0(2) ms
| α (98%)
| <sup>166</sup>Os
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (2%)
| <sup>170</sup>Ir
|-
| rowspan=2|<sup>171</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 93
| rowspan=2|170.98124(9)
| rowspan=2|51(2) ms
| α (99%)
| <sup>167</sup>Os
| rowspan=2|3/2-#
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (1%)
| <sup>171</sup>Ir
|-
| rowspan=2|<sup>172</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 94
| rowspan=2|171.977347(14)
| rowspan=2|98.4(24) ms
| α (77%)
| <sup>168</sup>Os
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (23%)
| <sup>172</sup>Ir
|-
| rowspan=2|<sup>173</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 95
| rowspan=2|172.97644(6)
| rowspan=2|365(7) ms
| α (84%)
| <sup>169</sup>Os
| rowspan=2|5/2-#
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (16%)
| <sup>173</sup>Ir
|-
| rowspan=2|<sup>174</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 96
| rowspan=2|173.972819(13)
| rowspan=2|0.889(17) s
| α (83%)
| <sup>170</sup>Os
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (17%)
| <sup>174</sup>Ir
|-
| rowspan=2|<sup>175</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 97
| rowspan=2|174.972421(20)
| rowspan=2|2.53(6) s
| α (64%)
| <sup>171</sup>Os
| rowspan=2|5/2-#
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (36%)
| <sup>175</sup>Ir
|-
| rowspan=2|<sup>176</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 98
| rowspan=2|175.968945(15)
| rowspan=2|6.33(15) s
| β<sup>+</sup> (62%)
| <sup>176</sup>Ir
| rowspan=2|0+
| rowspan=2| 
| rowspan=2|
|-
| α (38%)
| <sup>172</sup>Os
|-
| rowspan=2|<sup>177</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 99
| rowspan=2|176.968469(16)
| rowspan=2|10.6(4) s
| β<sup>+</sup> (94.4%)
| <sup>177</sup>Ir
| rowspan=2|5/2-
| rowspan=2|
| rowspan=2|
|-
| α (5.6%)
| <sup>173</sup>Os
|-
| style="text-indent:1em" | <sup>177m</sup>Pt
| colspan="3" style="text-indent:2em" | 147.4(4) keV
| 2.2(3) µs
|
|
| 1/2-
|
|
|-
| rowspan=2|<sup>178</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 100
| rowspan=2|177.965649(12)
| rowspan=2|21.1(6) s
| β<sup>+</sup> (92.3%)
| <sup>178</sup>Ir
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (7.7%)
| <sup>174</sup>Os
|-
| rowspan=2|<sup>179</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 101
| rowspan=2|178.965363(10)
| rowspan=2|21.2(4) s
| β<sup>+</sup> (99.76%)
| <sup>179</sup>Ir
| rowspan=2|1/2-
| rowspan=2|
| rowspan=2|
|-
| α (0.24%)
| <sup>175</sup>Os
|-
| rowspan=2|<sup>180</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 102
| rowspan=2|179.963031(12)
| rowspan=2|56(2) s
| β<sup>+</sup> (99.7%)
| <sup>180</sup>Ir
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (0.3%)
| <sup>176</sup>Os
|-
| rowspan=2|<sup>181</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 103
| rowspan=2|180.963097(16)
| rowspan=2|52.0(22) s
| β<sup>+</sup> (99.93%)
| <sup>181</sup>Ir
| rowspan=2|1/2-
| rowspan=2|
| rowspan=2|
|-
| α (0.074%)
| <sup>177</sup>Os
|-
| rowspan=2|<sup>182</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 104
| rowspan=2|181.961171(17)
| rowspan=2|2.2(1) min
| β<sup>+</sup> (99.96%)
| <sup>182</sup>Ir
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (0.038%)
| <sup>178</sup>Os
|-
| rowspan=2|<sup>183</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 105
| rowspan=2|182.961597(17)
| rowspan=2|6.5(10) min
| β<sup>+</sup> (99.99%)
| <sup>183</sup>Ir
| rowspan=2|1/2-
| rowspan=2|
| rowspan=2|
|-
| α (0.0096%)
| <sup>179</sup>Os
|-
| rowspan=3 style="text-indent:1em" | <sup>183m1</sup>Pt
| rowspan=3 colspan="3" style="text-indent:2em" | 34.50(8) keV
| rowspan=3|43(5) s
| β<sup>+</sup> (99.99%)
| <sup>183</sup>Ir
| rowspan=3|(7/2)-
| rowspan=3|
| rowspan=3|
|-
| α (4&times;10<sup>−4</sup>%)
| <sup>179</sup>Os
|-
| [[이성질핵 전이|IT]]
| <sup>183</sup>Pt
|-
| style="text-indent:1em" | <sup>183m2</sup>Pt
| colspan="3" style="text-indent:2em" | 195.68(11) keV
| >150 ns
|
|
| (9/2)+
|
|
|-
| rowspan=2|<sup>184</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 106
| rowspan=2|183.959922(19)
| rowspan=2|17.3(2) min
| β<sup>+</sup> (99.99%)
| <sup>184</sup>Ir
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (0.00169%)
| <sup>180</sup>Os
|-
| style="text-indent:1em" | <sup>184m</sup>Pt
| colspan="3" style="text-indent:2em" | 1839.4(16) keV
| 1.01(5) ms
| IT
| <sup>184</sup>Pt
| 8-
|
|
|-
| rowspan=2|<sup>185</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 107
| rowspan=2|184.96062(4)
| rowspan=2|70.9(24) min
| β<sup>+</sup> (99.99%)
| <sup>185</sup>Ir
| rowspan=2|(9/2+)
| rowspan=2|
| rowspan=2|
|-
| α (0.005%)
| <sup>181</sup>Os
|-
| rowspan=2 style="text-indent:1em" | <sup>185m</sup>Pt
| rowspan=2 colspan="3" style="text-indent:2em" | 103.4(2) keV
| rowspan=2|33.0(8) min
| β<sup>+</sup> (98%)
| <sup>185</sup>Ir
| rowspan=2|(1/2-)
| rowspan=2|
| rowspan=2|
|-
| α (2%)
| <sup>181</sup>Os
|-
| rowspan=2|<sup>186</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 108
| rowspan=2|185.959351(23)
| rowspan=2|2.08(5) h
| β<sup>+</sup> (99.99%)
| <sup>186</sup>Ir
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (1.4&times;10<sup>−4</sup>%)
| <sup>182</sup>Os
|-
| <sup>187</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 109
| 186.96059(3)
| 2.35(3) h
| β<sup>+</sup>
| <sup>187</sup>Ir
| 3/2-
|
|
|-
| rowspan=2|<sup>188</sup>Pt
| rowspan=2 style="text-align:right" | 78
| rowspan=2 style="text-align:right" | 110
| rowspan=2|187.959395(6)
| rowspan=2|10.2(3) d
| [[전자 포획|ε]] (99.99%)
| <sup>188</sup>Ir
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (2.6&times;10<sup>−5</sup>%)
| '''<sup>184</sup>Os'''
|-
| <sup>189</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 111
| 188.960834(12)
| 10.87(12) h
| β<sup>+</sup>
| <sup>189</sup>Ir
| 3/2-
|
|
|-
| style="text-indent:1em" | <sup>189m1</sup>Pt
| colspan="3" style="text-indent:2em" | 172.80(6) keV
| 464(25) ns
|
|
| 9/2-
|
|
|-
| style="text-indent:1em" | <sup>189m2</sup>Pt
| colspan="3" style="text-indent:2em" | 191.6(4) keV
| 143(5) µs
|
|
| (13/2+)
|
|
|-
| <sup>190</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 112
| 189.959932(6)
| '''6.5(3)&times;10<sup>11</sup> a'''
| α
| '''''<sup>186</sup>Os'''''
| 0+
| 1.4(1)×10<sup>−4</sup>
|
|-
| <sup>191</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 113
| 190.961677(5)
| 2.862(7) d
| ε
| '''<sup>191</sup>Ir'''
| 3/2-
|
|
|-
| style="text-indent:1em" | <sup>191m1</sup>Pt
| colspan="3" style="text-indent:2em" | 100.67(2) keV
| >1 µs
|
|
| (9/2)-
|
|
|-
| style="text-indent:1em" | <sup>191m2</sup>Pt
| colspan="3" style="text-indent:2em" | 149.04(2) keV
| 95(5) µs
|
|
| (13/2)+
|
|
|-
| <sup>192</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 114
| 191.9610380(27)
| colspan=3 align=center|'''관찰 안정'''<ref group="n">α 붕괴를 통해 '''<sup>188</sup>Os'''으로 붕괴할 수 있으며 반감기는 5.5 x 10<sup>21</sup> 년을 초과할 것으로 예상된다.</ref>
| 0+
| 0.00782(7)
|
|-
| <sup>193</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 115
| 192.9629874(18)
| 50(6) a
| ε
| '''<sup>193</sup>Ir'''
| 1/2-
|
|
|-
| style="text-indent:1em" | <sup>193m</sup>Pt
| colspan="3" style="text-indent:2em" | 149.78(4) keV
| 4.33(3) d
| IT
| <sup>193</sup>Pt
| 13/2+
|
|
|-
| <sup>194</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 116
| 193.9626803(9)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 '''<sup>190</sup>Os'''으로 붕괴할 수 있다.</ref>
| 0+
| 0.32967(99)
|
|-
| <sup>195</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 117
| 194.9647911(9)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 <sup>191</sup>Os으로 붕괴할 수 있다.</ref>
| 1/2-
| 0.33832(10)
|
|-
| style="text-indent:1em" | <sup>195m</sup>Pt
| colspan="3" style="text-indent:2em" | 259.30(8) keV
| 4.010(5) d
| IT
| '''<sup>195</sup>Pt'''
| 13/2+
|
|
|-
| <sup>196</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 118
| 195.9649515(9)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 '''<sup>192</sup>Os'''으로 붕괴할 수 있다.</ref>
| 0+
| 0.25242(41)
|
|-
| <sup>197</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 119
| 196.9673402(9)
| 19.8915(19) h
| β<sup>-</sup>
| '''<sup>197</sup>Au'''
| 1/2-
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>197m</sup>Pt
| rowspan=2 colspan="3" style="text-indent:2em" | 399.59(20) keV
| rowspan=2|95.41(18) min
| IT (96.7%)
| <sup>197</sup>Pt
| rowspan=2|13/2+
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (3.3%)
| '''<sup>197</sup>Au'''
|-
| <sup>198</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 120
| 197.967893(3)
| colspan=3 align=center|'''관찰 안정'''<ref group="n">α 붕괴를 통해 <sup>194</sup>Os으로 붕괴하거나 또는 β<sup>-</sup>β<sup>-</sup> 붕괴를 통해 '''<sup>198</sup>Hg'''으로 붕괴할 수 있으며 반감기는 3.9 x 10<sup>19</sup> 년을 초과할 것으로 보인다.</ref>
| 0+
| 0.07163(55)
|
|-
| <sup>199</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 121
| 198.970593(3)
| 30.80(21) min
| β<sup>-</sup>
| <sup>199</sup>Au
| 5/2-
|
|
|-
| style="text-indent:1em" | <sup>199m</sup>Pt
| colspan="3" style="text-indent:2em" | 424(2) keV
| 13.6(4) s
| IT
| <sup>199</sup>Pt
| (13/2)+
|
|
|-
| <sup>200</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 122
| 199.971441(22)
| 12.5(3) h
| β<sup>-</sup>
| <sup>200</sup>Au
| 0+
|
|
|-
| <sup>201</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 123
| 200.97451(5)
| 2.5(1) min
| β<sup>-</sup>
| <sup>201</sup>Au
| (5/2-)
|
|
|-
| <sup>202</sup>Pt
| style="text-align:right" | 78
| style="text-align:right" | 124
| 201.97574(32)#
| 44(15) h
| β<sup>-</sup>
| <sup>202</sup>Au
| 0+
|
|
|}
<references group="n" />

{{동위 원소 색인}}

[[분류:백금|동위 원소]]
[[분류:백금 동위 원소| ]]
[[분류:원소별 동위 원소 목록]]