Wikipedia>Johnjbarton: Add notes on verification based on a post by User:ComplexRational in Wikipedia_talk:WikiProject_Elements#Suitability_of_NUBASE2020_as_a_source.

2025-07-31T14:46:31Z

Add notes on verification based on a post by User:ComplexRational in Wikipedia_talk:WikiProject_Elements#Suitability_of_NUBASE2020_as_a_source.

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{{Documentation subpage}}
Useful standard reference for [[isotopes]] recommended for use on pages covered by [[Wikipedia:WikiProject Elements]].

=== Verification ===
Diagrams in the first few pages of NUBASE that represent trends in nuclides. The chart of nuclides on page 11 (page 12 of the PDF document) illustrates the most common decay mode of each nuclide as well as the lightest and heaviest isotope of each element.

Naturally occurring isotopes and atomic weights, the abundance for each isotope can be readily verified in the NUBASE data. The sums of the abundances for all naturally occurring isotopes must add up to 1 (100%).

Determining decay products for each stated decay mode is also a routine calculation, so it is sufficient to cite either the decay mode or the decay product by itself.

When there are exceptions, most often for isotopes discovered more recently than NUBASE was published, add an additional citation.

=== Effect ===
* Returns {{tlf|cite journal}} source:
<nowiki>{{NUBASE2020}}</nowiki> → {{NUBASE2020|plain}}

* As a reference, with <code>ref name="NUBASE2020"</code>:
<nowiki>{{NUBASE2020|ref}}</nowiki> → <nowiki><ref name="NUBASE2020">{{cite journal|...}}</ref></nowiki> → Produces:{{NUBASE2020|ref}}

* Use name only (repeated use in article):
:<nowiki>{{NUBASE2020|name}}</nowiki> → <nowiki><ref name="NUBASE2020"/></nowiki>
:{{small|1=This <code>ref name</code> is spelled ''exactly'' as the template name: {{PAGENAME}}}}

; Optional parameters
*{{para|ref}} is passed to the citation, for example:
<nowiki>{{NUBASE2020 |ref={{harvid|''NUBASE2020''|2020}}}}</nowiki>
*{{para|page}} is passed to the citation, for example:
<nowiki>{{NUBASE2020 |page=030002}}</nowiki>

*{{para|accessdate}}
<nowiki>{{NUBASE2020 |accessdate=2019-06-25}}</nowiki>

==Number of isotopes listed==
Per the NUBASE 2020 introduction:

{{quote|text=The NUBASE2020 evaluation contains recommended properties for the ground state of 3340 nuclides and for 1938 excited isomeric (''T''<sub>1/2</sub> > {{val|100|u=ns}})<br/>It also includes information for yet unobserved nuclei (218 in their ground state and 45 excited isomers) whose properties were estimated by following the systematic trends in neighboring nuclei (TNN)|style=background:#eee}}

Which adds up to:
:{{mono|3340}} ground state
:{{mono|1938}} excited isomeric
:{{mono| 218}} unobserved, estimated; ground state
:{{mono|  45}} unobserved, estimated; excited state
————— +
:'''{{mono|5541}} isotopes''' are listed

==Template Data==
{{TemplateDataHeader}}
<templatedata>
{
"params": {
"1": {},
"page": {},
"access-date": {},
"ref": {}
}
}
</templatedata>

==See also==
* {{tl|Isotopes table}} — Big list of isotopes, uses this reference template (for example {{section link|Isotopes of uranium|List of isotopes}}).
{{Isotopes table/references}}
<includeonly>{{sandbox other||
[[Category:Chemistry citation templates]]
[[Category:Physics citation templates]]
}}</includeonly>

Template:NUBASE2020/doc - Revision history

Wikipedia>Johnjbarton: Add notes on verification based on a post by User:ComplexRational in Wikipedia_talk:WikiProject_Elements#Suitability_of_NUBASE2020_as_a_source.