This is pgf-PeriodicTable, version 2.1.1 (2024/07/07).

The purpose of this package is to provide the Periodic Table of Elements in
a simple way. It relies on pgf/TikZ to offer a full or partial periodic table with
a variety of options and displaying the desired data for all the 118
elements. It can be done in different languages: English, French, German,
Portuguese (from Portugal and from Brazil), Spanish, Italian and translations
by user contributions (currently Dutch).
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Just typeset \pgfPT to get a Periodic Table of Elements or \pgfPT[<options list>]
to do it at your custom way.
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** Requirements: TikZ and fontenc (pdfLaTeX) or fontspec (XeLaTeX or LuaLaTeX) packages.
** Installation: unpack everything in a directory in the TeX search path and refresh the TeX database.
** Usage: just place \usepackage{pgf-PeriodicTable} in the preamble.
** Contact the author: Hugo Gomes (hugo.parelho@gmail.com)
** Licence: released under the LaTeX Project Public License v1.3 or later, see http://www.latex-project.org/lppl.txt
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Major changes:

*** v2.1.1 (07/07/2024) ***
New keys:
- group numbers (to display group numbers in arabic numerals, Roman numerals or both)
- Roman label color (sets the color of the Roman numerals)
- O Roman (the oxidation numbers are presnted in Roman numerals)

*** v2.1.0a (03/04/2024) ***
Translation files have been renamed from 'lang.{undefined,nl}.tex' to 'pgfPT.lang.{undefined,nl}.tex' to match the runtime tree of TeX Live (names must be globally unique for reliable searching).

*** v2.1.0 (14/02/2024) ***
New options for package loading:
- numerals (supporting Devanagari or Mandarin numerals);
- userlang (supporting a user defined language, currently only Dutch translation, provided by Wim De Borggraeve).
New commands:
- \pgfPTdvnfont (provides font selection for use with Devanagari);
- \pgfPTzhfont (provides font selection for use with Mandarin numerals);
- \pgfPTzhnumber (to enable/disable showing the atomic number, period or group number in Mandarin numerals).
Fixed wrong interaction with fontspec and babel packages: font selection schemes and \babelfont usage now work as expected.
Fixed incorrect capitalization of some elements in German.
Correction of the title in Spanish.

*** v2.0.1 (29/05/2023) ***
Capitalized element names (in German) and improved German language after suggestions made by Ole Schwen

*** v2.0.0 (20/02/2023) ***
New command \usepgfPTlibrary
New library 'colorschemes' for easy creation of color schemes with the commands:
- \pgfPTGroupColors
- \pgfPTPeriodColors
- \pgfPTCScombine
- \pgfPTCSwrite

*** v1.0.1 (08/11/2022) ***
Now compatible with pdfLaTex, LuaLaTeX and XeLaTeX engines.
Fixed the 'String contains an invalid utf-8 sequence...' error.
Added \pgfPTsetLanguage{<language flag>} command to the documentation (forgotten in v1.0.0 manual).
Updated the behavior of the 'capitalize element names' key.
New keys:
- name align
- d unit
- ls unit
New pseudo styles:
- d
- lat

*** v1.0.1 (10/10/2022) ***
Initial release
