From an avoided double redirect: This is a redirect from an alternative title or related topic of Molecular ion, another redirect to the same title. Because double redirects are disallowed, both pages currently point to Mass spectral interpretation.
If Molecular ion is retargeted or is expanded into a separate article, template, or other project page, this redirect will be recategorized to be updated.
From the plural form: This is a redirect from a plural noun to its singular form or to a broader article; the singular form is "Molecular ion".
This redirect link is used for convenience; it is often preferable to add the plural directly after the link (for example, [[link]]s). However, do not replace these redirected links with a simpler link unless the page is updated for another reason (see WP:NOTBROKEN).
Use this rcat to tag only mainspace redirects; when plural forms are found in other namespaces, use {{R from modification}} instead.