A Quote by Dmitri Mendeleev

If all the elements are arranged in the order of their atomic weights, a periodic repetition of properties is obtained. This is expressed by the law of periodicity.

Dmitri Mendeleev

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Arranged Atomic Elements Expressed Law Obtained Order Periodic Periodicity Properties Repetition Weights

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Dmitri Mendeleev
Russian - Scientist
February 8, 1834 - February 2, 1907

The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties.

Dmitri Mendeleev

[This] may prove to be the beginning of some embracing generalization, which will throw light, not only on radioactive processes, but on elements in general and the Periodic Law.... Chemical homogeneity is no longer a guarantee that any supposed element is not a mixture of several of different atomic weights, or that any atomic weight is not merely a mean number.

Frederick Soddy

Certain characteristic properties of elements can be foretold from their atomic weights.

Dmitri Mendeleev

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).

Dmitri Mendeleev

When the elements are arranged in vertical columns according to increasing atomic weight, so that the horizontal lines contain analogous elements again according to increasing atomic weight, an arrangement results from which several general conclusions may be drawn.

Dmitri Mendeleev

The elements which are the most widely diffused have small atomic weights.

Dmitri Mendeleev

Probably our atomic weights merely represent a mean value around which the actual atomic weights of the atoms vary within certain narrow limits... when we say, the atomic weight of, for instance, calcium is 40, we really express the fact that, while the majority of calcium atoms have an actual atomic weight of 40, there are not but a few which are represented by 39 or 41, a less number by 38 or 42, and so on.

William Crookes

Experimental work of great refinement is necessary in order to determine atomic weights. No relationships between them have yet been certainly found which make it possible for us to compute by any sort of calculation exactly the value of any one atomic weight from any other.

Theodore William Richards

I still have a vivid memory of my excitement when I first saw a chart of the periodic table of elements. The order in the universe seemed miraculous.

Joseph Murray

In the complex course of its evolution, life exhibits a remarkable contrast to the tendency expressed in the Second Law to Thermodynamics. Where the Second Law expressed an irreversible progression toward increased entropy and disorder, life evolves continually higher levels of order. The still more remarkable fact is that this evolutionary drive to greater and greater order also is irreversible. Evolution does not go backward.

J. H. Rush

The modesty of women, which, in its most primitive form among animals, is based on sexual periodicity, is, with that periodicity, an essential condition of courtship.

Havelock Ellis

Everywhere in the universe, the periodic table has the same basic structure. Even if an alien civilization's table weren't plotted out in the castle-with-turrets shape we humans favor, their spiral or pyramidal or whatever-shaped periodic table would naturally pause after 118 elements.

Sam Kean

The eight laws of learning are explanation, demonstration, imitation, repetition, repetition, repetition, repetition, repetition.

John Wooden

It's a strange thing, we think that law brings order. Law doesn't. How do we know that law does not bring order? Look around us. We live under the rule of law. Notice how much order we have?

Howard Zinn

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.

Dmitri Mendeleev

I know of scarcely anything so apt to impress the imagination as the wonderful form of cosmic order expressed by the "Law of Frequency of Error." The law would have been personified by the Greeks and deified, if they had known of it. It reigns with serenity and in complete self-effacement, amidst the wildest confusion. The huger the mob, and the greater the apparent anarchy, the more perfect is its sway. It is the supreme law of Unreason.

Francis Galton

A Quote by Dmitri Mendeleev

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