Merits of mendeleev periodic table 1 point atomic masses ......
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Merits Of Mendeleev's Periodic Table↪
1) Grouping Of Elements => He generalized the study of the elements then known to a study of mere eight groups.
2) Gaps For Undiscovered Elements => In order to make sure that elements having similar properties fell in the same vertical column or group, Mendeleev left some gaps in his periodic table. These gaps were left for subsequent inclusion of elements not known at that time. Mendeleev correctly thought that such elements would be discovered later.
3) Prediction Of Properties Of Undiscovered Elements => He predicted the properties of the then unknown elements on the basis of properties of elements lying adjacent to the vacant slots. He actually predicted the properties of some undiscovered elements in 1871.
For Example,
(a) Eka aluminum (means one place below aluminum in the group); its atomic mass and chemical properties are quite similar to those of the element gallium discovered in 1876.
(b) Properties of Eka-silicon are the properties of germanium.
4) Incorrect Atomic Mass Corrected => He was able to correct the values of atomic mass if elements like gild and platinum by placing these elements strictly in the basis if similarities in their properties.
;-)
Here's your answer....!
Merits Of Mendeleev's Periodic Table↪
1) Grouping Of Elements => He generalized the study of the elements then known to a study of mere eight groups.
2) Gaps For Undiscovered Elements => In order to make sure that elements having similar properties fell in the same vertical column or group, Mendeleev left some gaps in his periodic table. These gaps were left for subsequent inclusion of elements not known at that time. Mendeleev correctly thought that such elements would be discovered later.
3) Prediction Of Properties Of Undiscovered Elements => He predicted the properties of the then unknown elements on the basis of properties of elements lying adjacent to the vacant slots. He actually predicted the properties of some undiscovered elements in 1871.
For Example,
(a) Eka aluminum (means one place below aluminum in the group); its atomic mass and chemical properties are quite similar to those of the element gallium discovered in 1876.
(b) Properties of Eka-silicon are the properties of germanium.
4) Incorrect Atomic Mass Corrected => He was able to correct the values of atomic mass if elements like gild and platinum by placing these elements strictly in the basis if similarities in their properties.
;-)
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