Question

write 10 advantage of mendeleev periodic table

Answer 1

Answer:

• Grouping of elements. He generalized the study of the elements then known to a study of mere 8 groups.

• Gaps for undiscovered elements. Mendeleev left some gaps in his periodic table. These gaps were left for subsequent inclusion of elements not known at that time. He correctly thought that such elements would be discovered later.

• Prediction of properties of undiscovered elements. He predicted the properties of then unknown elements om the basis of properties of elements lying adjacent to the vacant slots.  

• Incorrect masses corrected. He was able to correct the values of atomic mass of elements like gold and platinum by placing these elements strictly on the bases of similarities in their properties.

• Mendeleev was the first one to establish a systematic arrangement and bring out the periodicity of properties of elements with atomic weight and propose a periodic law.
• It could point out the incorrect atomic weight of some elements known at that time.
• It could predict the existence of other elements and could predict their properties so, as to leave space in the periodic table.
• It could accommodate all the sixty elements discovered at that time and could accommodate the noble gases which, where discovered later.

Answer 2

Answer:

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