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Class 11ChemistryClassification of Elements and Periodicity in PropertiesHistory of periodic table
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What was the basis for Mendeleev's classification of elements in his periodic table?

  • A
    Atomic number
  • B
    Atomic mass
  • C
    Electronic configuration
  • D
    Electronegativity
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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

History of periodic table

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Mendeleev's periodic law is based on

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What were the important contributions of Mendeleev's periodic table?

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Match the following and select the correct option.
List-$I$ List-$II$
$(1)$ Lothar Meyer $(A)$ First to present a periodic table showing correct arrangement up to Calcium.
$(2)$ $A$.$E$.$B$. de Chancourtois $(B)$ Arranged elements in horizontal and vertical rows based on atomic weight.
$(3)$ Newlands $(C)$ Discovered the element with atomic number $101$.
$(4)$ Seaborg $(D)$ Suggested that arrangement based on atomic weight is an important concept in the periodic table.
$(E)$ Presented the first possible periodic table.
$(F)$ Arranged elements into groups of three.
$(G)$ Law of Octaves.

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On the basis of which property did Mendeleev arrange the elements?

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Which elements did Mendeleev leave gaps for in his periodic table and what names did he give them?

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