There are thousands of periodic tables in web space, but there is only one comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Dr Mark R Leach.
Use the buttons below to select from the 1000+ Periodic Tables in the database:
The 10 Periodic Tables most recently added to the database:
The paper published below represents Tresvyatskii's fundamental study. It establishes the
interrelation between the ionization potential and place of an element in the periodic table. Oxides
with a certain composition may form only when an element is ionized to the needed degree. Hence,
the ionization potential of elements is an important parameter that governs the formation of an
oxide. In this regard, the dependence of the ionization potential on the place of an element in the
periodic table is of paramount importance. The role of the ionization potential in the hightemperature chemistry of oxide compounds, which underlies modern oxide materials science, is
especially significant. The paper is published in Tresvyatskii's original version.
A depiction of the short-form table, showing some clever thinking:
The reversal in atomic number order of Np to Am
The return of the curides
The placement of the Ln and the curides alongside the main table
"Model demonstrating the telluric screw periodic system of Alexander-Emile Beguyer de Chancourtois proposed in a paper published in 1862.
"This model, made by the Science Museum in 1925, provides a rare physical realisation of arguably the earliest periodic system of for the elements. It was devised by the French geologist, Alexander-Emile Beguyer de Chancourtois in 1862, 7 years prior to Dmitri Mendeleev's periodic table.
"De Chancourtois arranged the elements in the order of their atomic weights along a helix which was traced on the surface of a vertical cylinder, with an angle of 45 degrees to its axis. The base of the cylinder was divided into 16 equal parts (the atomic weight of oxygen), and the lengths of the spiral corresponding to the weights of the elements were found by taking the one-sixteenth part of a complete turn as a unit":
From the Science Museum in the UK collection, the Wollaston slide rule of chemical equivalents:
"Three sliding scales of chemical equivalents, all with same manuscripts marks, published by W Cary, devised by W H Wollast.
"William Hyde Wollaston was a leading chemist and natural philosopher during the early 19th century. In 1813 he invented a chemical slide rule to illustrate his paper published the following year entitled: A synoptic scale of chemical equivalents. He was interested in the ratio of weights of various substances used up in reactions.
"Positioning the slider with the weight of the substance set against it will show you the weights of other substances which will react with it. This fundamental ordering based on measurement paved the way for the periodic table of the elements":
Mark Leach writes:
"I have editied the image above, so as to set the scale to zero, below:"
On inspection, it will be observed that many of the atomic weights are rather different to our modern understanding. My readings for some of the atomic weights are:
azote = N
Nagayasu Nawa writes and provides an explanation as how the slide rule is used:
"It is very interesting slide rule for me.
Because we actually used slide rule in 1960s. There were not the
electronic calculator in the world.
"Supported by poles and twisting around itself in a snake-like manner, this object is one of many weird and interesting forms of the periodic table. It was built at the Royal Military College of Science in 1963. The Science Museum asked for this model to be made for them to display in their new chemistry gallery after the original model was seen at an exhibition held by the Physical Society.":
The journal Science gives "a visual brief history" of the periodic table, with some neat graphics showing the PT grew and changed with time. (You will need to visit the webpage to see the cool graphics inaction):
"Introducing the world's first and only miniature Periodic Table with the actual elements in it.
"Over the last year, we have successfully collected each and every stable element. After considerable R&D, we have finally developed a method of embedding each element in acrylic and we have to say, the result is awesome!
"The Heritage Periodic Table pretty much speaks for itself. The collection looks great on a desk, in your hands, and anywhere else it can be displayed."