Editing Platinum (section)

===Isotopes===
{{main|Isotopes of platinum}}
Platinum has six naturally occurring [[isotopes]]: {{chem|190|Pt}}, {{chem|192|Pt}}, {{chem|194|Pt}}, {{chem|195|Pt}}, {{chem|196|Pt}}, and {{chem|198|Pt}}. The most [[isotopic abundance|abundant]] of these is {{chem|195|Pt}}, comprising 33.83% of all platinum. It is the only stable isotope with a non-zero [[Spin (physics)|spin]]. The spin of <sup>1</sup>/<sub>2</sub> and other favourable magnetic properties of the nucleus are utilised in [[Platinum-195 nuclear magnetic resonance|{{chem|195|Pt}} NMR]]. Due to its spin and large abundance, {{chem|195|Pt}} satellite peaks are also often observed in {{chem|1|H}} and {{chem|31|P}} NMR spectroscopy (''e.g.,'' for Pt-phosphine and Pt-alkyl complexes). {{chem|190|Pt}} is the least abundant at only 0.01%. Of the naturally occurring isotopes, only {{chem|190|Pt}} is unstable, though it decays with a half-life of 6.5{{e|11}}&nbsp;years, causing an activity of 15 [[Becquerel|Bq]]/kg of natural platinum. Other isotopes can undergo [[alpha decay]], but their decay has never been observed, therefore they are considered stable.<ref name="bellidecay">{{cite journal |last1=Belli |first1=P. |last2=Bernabei |first2=R. |last3=Danevich |first3=F. A. |last4=Incicchitti |first4=A. |last5=Tretyak |first5=V. I. |display-authors=3 |title=Experimental searches for rare alpha and beta decays |journal=European Physical Journal A |date=2019 |volume=55 |issue=8 |pages=140–1–140–7 |doi=10.1140/epja/i2019-12823-2 |issn=1434-601X |arxiv=1908.11458|bibcode=2019EPJA...55..140B |s2cid=201664098 }}</ref> Platinum also has 38 synthetic isotopes ranging in atomic mass from 165 to 208, making the total number of known isotopes 44. The least stable of these are {{chem|165|Pt}} and {{chem|166|Pt}}, with half-lives of 260&nbsp;μs, whereas the most stable is {{chem|193|Pt}} with a half-life of 50&nbsp;years. Most platinum isotopes decay by some combination of [[beta decay]] and alpha decay. {{chem|188|Pt}}, {{chem|191|Pt}}, and {{chem|193|Pt}} decay primarily by [[electron capture]]. {{chem|190|Pt}} and {{chem|198|Pt}} are predicted to have energetically favorable [[double beta decay]] paths.<ref name="nubase">{{NUBASE2020}}</ref>