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Periodic Table X is an easy-to-use periodic table. Features:
  • Quick access to a wide variety of atomic properties.
  • Relative values of many atomic properties on the periodic table are viewable as color scales on reconfigurable tables.
  • Visible spectra, molecular weight calculations.
  • User-friendly interface.
  • Flexible interface--choose a table to view at startup, choose units of displayed values.
  • Controls and design help to emphasize relationships between elements.

What's New

  • Version 5, now ready
  • Better display of line graphs
  • Small improvements


OS X 10.4 or later

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Periodic Table User Discussion

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Prince_Isaac Member IconComment+300

To the Dev: Your build/version number ( is almost as long as the periodic table itself! How about subscribing to the popular convention of simplifying the version number? Such as 5.0.71? :-)

Reply2 replies
Synergy Creations (Developer)

Today (March 1 2014) is version 5.0.0. If you do "Get Info" in the Finder on the app you'll see 5.0.0. The additional bits are build numbers, MacUpdate picks them up. I am not sure why; when I submitted the update I typed "5.0". :-)


@synergy...Thanks for the reply and explanation. MU does some pretty strange things to individual listings but that's to be expected when dealing with tons of uploads, downloads, etc.

Wishing you success!

Rayj Member IconComment+45

Try rsc.org/periodic-table: all the information you could want.

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tijej Member IconComment+29

This software is stucked in the Mac OS 9 ages.

If you want a modern periodic table (not free, but quite cheap : $10), check out Elements from Digital Science.

Reply0 replies
Version 4.0.8
umijin Member IconComment+72

Try Smell-O-Mints for a *free* periodic table with many of the same features.

I'm not sure Periodic Table X gives you that much more for $20, but it certainly looks nice.

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Version 4.0.8
Anonymous Member IconReview

There is a free widget and it is as good as this shareware.

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Version 4.0.1
Anonymous Member IconReview

As an amateur biochemist, I've scoured the Internet looking for the best chemistry tools. This is by far the best periodic table tool for the Mac. Its startup preferences let you configure the program to display your favorite element attributes at launch, and the thing is chock full of properties and other helpful information. There are some other programs out there that are a little prettier, but they all seem to sacrifice utility for cuteness. PeriodicTable is a workhorse!

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Version 3.5.2
Anonymous Member IconReview

As a professional chemist with 25 years working in the field, this is the one I use. Its ability to make tables of properities for any of the parameters it has is priceless. You can quickly see the relationships between all the elements that greatly simplfy determining which will give the desired result. Great job!

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Version 3.5
Anonymous Member IconReview

Really good app, very useful for High School Chemisty.

Reply0 replies
Version 3.4
There are no Ratings for this App yet.
> 5 3


Current Version (5.x)


Downloads 14,302
Version Downloads 297
License Shareware
Date 01 Mar 2014
Platform OS X / PPC 32 / Intel 32
Price $25.00
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