Carolus Linnaeus comes up with a new naming systems for organisms
As a result, chemists sought the same logic with organizing the elements.
Antoine Laurent Lavoisier publishes "Traite Elementaire de chimie"
In this publication, Lavoisier lists and described the chemical and physical properties of the thirty known elements of his time.
Titanium is isolated.
Humphry Davy shows that elements are electrically attracted to each other.
J.W. Dobereiner classified some elements into triads.
Triads are groups of three elements that have similar chemical properties.
Group of chemists meet in Karl ruche, Germany.
This meeting was proposed to review the various scientific matters at the time.
John Alexander Newlands makes a list of the chemical elements known to him.
These items were based on order from the smallest atomic mass to the largest atomic mass.
Newlands proposed the Law of Octaves to the Chemical Society.
The law of octaves is Newlands' idea that every eighth had many of the same chemical and physical characteristics as the first in the series of eight. When presenting to the Chemical Society, he was merely laughed at.
Mendeleev publishes his own periodic table
Just as Newlands had done, Mendeleev arranged the elements in increasing atomic mass. He also took Newlands' work a stem further, and put them in rows according to the way they reacted with other elements when mixed.
Dmitry Mendeleev shows Chemical Society that the Law of Octaves was correct.
Lothar Meyer publishes publishes his version of periodic table.
This publication clearly showed a relationship between the relative atomic volumes and wights of the elements, but it was overshadowed by Mendeleev, as Mendeleev publishes a similar version before Meyer.
Mendeleev predicts the existence of elements that would fill empty spots
French Chemists discover eka-aluminum, name it Gallium.
German chemists discover eka-silicon and name it germanium, after their country.
William Ramsey discovers that Helium exists on earth.
John William Strutt and William Ramsey discover Argon.
William Ramsey discovered two more noble gases: Krypton and Xenon.
Radon is discovered by Fredrich Dorn
H.G.J. Moseley discovers some elements couldn't be arranged by atomic mass
H.G.J. Moseley developes the concept of atomic number.