Answer: The latest release of the IUPAC Periodic Table is dated 4 May 2022, based on the 2021 Table of Standard Atomic Weights.
Status: Confirmed
Entry: science/iupac-periodic-table
Revision: 1
Digest: sha256:7f8ab215711bf5bb (changes whenever the content changes)

Timeline:
  Created: 2026-11-12T10:37:13Z
  Last changed: 2026-11-12T10:37:13Z
  Last verified: 2026-11-12T11:34:18Z
  Next check: 2026-11-19T11:34:18Z
  Check interval: Weekly
  Expected change: No fixed schedule

Data:
  Field | Value | Source | As of
  latest release date | 4 May 2022 | [1] | 2026-11-12
  standard atomic weights table | 2021 | [1] | 2026-11-12
  report title | Standard Atomic Weights of the Elements 2021 | [1] | 2026-11-12
  publication date | May 2022 | [1] | 2026-11-12

Sources:
  [1] IUPAC. "Periodic Table of Elements - IUPAC | International Union of Pure and Applied Chemistry". https://iupac.org/what-we-do/periodic-table-of-elements/
      Role: primary. Accessed: 2026-11-12T11:34:18Z
      Quote: "The latest release of the Periodic Table (dated 4 May 2022)" (Supports: latest release date)
      Quote: "compiled as part of the 2021 Table of Standard Atomic Weights 2021" (Supports: standard atomic weights table)
      Quote: "The most recent report “Standard Atomic Weights of the Elements 2021” has been published in PAC in May 2022" (Supports: report title)
      Quote: "has been published in PAC in May 2022 (AOP 4 May 2022; https://doi.org/10.1515/pac-2019-0603 )" (Supports: publication date)
      Published: 2026-11-12T11:34:18Z
      Snapshot SHA-256: d36f889df778a838911070302548c6206dba97b978dca0a689a932899039b2f8 (captured 2026-11-12T10:37:13Z)

Verification:
  Method: Automated extraction from [1] with deepseek-flash (JSON output, thinking disabled). Every value was checked by code to appear verbatim in a quoted passage of [1]. On this check the text of [1] was unchanged since 2026-11-12T10:37:13Z, so the values verified then were kept.
  Cross-check: not-available at 2026-11-12T11:34:18Z. No independent second source is configured for this entry
  Last successful check: 2026-11-12T11:34:18Z
  Last attempt: 2026-11-12T11:34:18Z

Notes and limitations:
  Extracted automatically from a single official source.

Change log:
  Time | Event | Change | Source
  2026-11-12T10:37:13Z | added | Entry created | —
  Changes for this entry as a feed: https://latestn.com/science/iupac-periodic-table/latest

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How to cite:
    latestN. (2026). What is the latest IUPAC periodic table? Revision 1, last verified 2026-11-12T11:34:18Z. https://latestn.com/science/iupac-periodic-table (accessed 2026-11-12T12:52:56Z).

    @misc{latestN_science_iupac_periodic_table_r1,
      title        = {What is the latest IUPAC periodic table?},
      author       = {{latestN}},
      year         = {2026},
      howpublished = {\url{https://latestn.com/science/iupac-periodic-table}},
      note         = {Revision 1; digest sha256:7f8ab215711bf5bb; last verified 2026-11-12T11:34:18Z; accessed 2026-11-12T12:52:56Z}
    }

URL: https://latestn.com/science/iupac-periodic-table