Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).
Meaning of the quote
Elements with similar chemical properties often have atomic weights that are either very close in value, like platinum, iridium, and osmium, or increase in a predictable pattern, like potassium, ruthenium, and cesium. This observation was made by the Russian scientist Dmitri Mendeleev, and it helped him create the periodic table of elements, a tool that organizes all known elements based on their properties.
About Dmitri Mendeleev
Dmitri Mendeleev was a Russian chemist who is best known for formulating the Periodic Law and creating a version of the periodic table of elements. He used the Periodic Law to correct the properties of some known elements and predict the properties of three elements that were yet to be discovered.
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More quotes from Dmitri Mendeleev
No one nor anything can silence me.
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I have achieved an inner freedom.
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The most all penetrating spirit before which will open the possibility of tilting not tables, but planets, is the spirit of free human inquiry. Believe only in that.
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Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).
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The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties.
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Work, look for peace and calm in work: you will find it nowhere else.
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Pleasures flit by – they are only for yourself; work leaves a mark of long-lasting joy, work is for others.
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There exists everywhere a medium in things, determined by equilibrium.
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There is nothing in this world that I fear to say.
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I want you to have this feeling too – it is my moral responsibility to help you achieve this inner freedom.
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The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body.
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We could live at the present day without a Plato, but a double number of Newtons is required to discover the secrets of nature, and to bring life into harmony with the laws of nature.
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We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon- whose atomic weight would be between 65 and 75.
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