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The Periodic Law

This principle, known as the Periodic Law, was enunciated by Mendelejeff in two memoirs published in 1869 and 1871, respectively, and the arrangement of the elements, based on this law ... read more

Periodic table

It is a graphic formulation of the periodic law, which states that the properties of the chemical elements exhibit a periodic dependence on their atomic numbers. The table is divided into four roughly ... read more

Oak Ridge National Laboratory credited with discovery of 3 elements in the periodic table

One of the proud achievements of Oak Ridge National Laboratory is the discovery of three elements either by its own employees or in collaboration. read more

The Radio-Elements and the Periodic Law

for the discussion of the wide generalisations that have been made with regard to the position of the radio-elements in the periodic table, consequent on the recent experimental work of A. read more

What is a Chemical Element?

The periodic law apparently connected these two criteria, fitted the individual elements into families, and showed that, whatever the elements were, they were all of a class, the limits of ... read more

10 Things You Didn't Know About the Periodic Table

The periodic table of elements is a cornerstone of modern chemistry, representing the organized arrangement of all known chemical elements. Its iconic layout provides scientists with a systematic ... read more

Justice Minister updates UN on law & order plan

Justice Minister Paul Goldsmith has attended the Universal Periodic Review in Geneva and outlined the Government’s plan to restore law and order. “Speaking to the United Nations Human Rights Council ... read more

Development of the periodic table

Just four years before Mendeleev announced his periodic table, Newlands noticed that there were similarities between elements with atomic weights that differed by seven. He called this The Law of ... read more

Oak Ridge National Laboratory credited with discovery of 3 elements in the periodic table

“The reason is that the determination of the periodic law is not the mass. It’s the atomic number - the number of protons each element has.” The atomic number for each known element was ... read more