![]() Many yet unknown elements may be discovered.Ħ. The magnitude of atomic weight determines the character of the element.ĥ. The elements which are most widely distributed in nature have small atomic weights and possess sharply defined properties.Ĥ. The elements, if arranged according to their atomic weights exhibit an evident periodicity of properties.Ģ.Ğlements which are similar as regards their chemical properties have atomic weights which either areof nearly same value, e.g., Fe, Co, Ni or increase regularly, e.g., K, Rb, Cs.ģ. The main points of Mendeleeff’s periodic table:ġ. If the elements are arranged in order of increasing atomic masses, their properties vary in a definite manner from member to member of the series but return more or less nearly to the same value of certain fixed points in the series. The properties of the elements are periodic functions of their atomic masses. Mendeleeff’s Periodic law & Periodic Table (iv) The transition elements occupy minima of the curve. (iii) The halogens (F, Cl, Br, I) occupy positions on the ascending portions of the curve before inert gases. (ii) The alkaline earth metals (Mg, Ca, Sr, Ba) occupy positions at about the mid points on the descending portions of the curve. (i)Ělkali metals, having the largest atomic volumes, occupy the maxima of the curve. ![]() Lother Meyer pointed out that elements having similar properties occupy similar properties occupy similar positions on the curve such as, LOTHER MEYER’S CURVE AND MENDELEEFF’S PERIODIC LAW The elements when arranged in order of their increasing atomic masses, the eighth succeeding element was the repetition of 1st one like the eight note of musical scale. Atomic mass of middle member was the arithmetic mean of the atomic masses of other two. The arrangement of elements in such a way that the similar elements fall within the same place & the dissimilar elements are separated is known as classification of elements.Įarlier attempts of classification of elements:Įarlier attempts on classification of elements were based on atomic masses.Ĭertain similar elements exist in groups of 3 elements which named triad. Join us on this educational journey as we unravel the mysteries and marvels of the elements that surround us.Classification of Elements & Periodic Properties Whether you're a student, a science enthusiast, or simply curious about the elements that shape our world, our presentation on the Periodic Table will enlighten and inspire. Engaging narratives and captivating illustrations bring the elements to life, making the learning experience both enjoyable and informative. Discover their unique characteristics, such as their physical and chemical properties, common uses, and even their historical significance. Each element is presented with its atomic number, symbol, and atomic mass, providing a clear overview of the entire table.ĭelve deeper into the presentation and unlock a wealth of knowledge about each element. Our presentation offers a captivating visual representation of the Periodic Table, showcasing the elements and their essential properties. Welcome to the project dedicated to the remarkable Periodic Table of Elements! Prepare to embark on an exciting exploration of the building blocks of our universe through our comprehensive presentation.
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