History Of Periodic Table

6 Questions | Attempts: 48
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    Dobereiner's triad was based on 

    • Atomic mass
    • Atomic number 
    • Ions 
    • Valency
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History Of Periodic Table - Quiz

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  • 2. 

    Position of isotope was a problem in 

    • Mendeleev's

    • Newland's

    • Dobereiner's

    Correct Answer
    A. Mendeleev's
  • 3. 

    The atomic mass of sodium if lithium - mass 7, sodium and potassium mass 39 are triads is 

    • 23

    • 30

    • 26

    • 21

    Correct Answer
    A. 23
  • 4. 

    Merit of mendeleev' periodic table

    • Based on atomic mass

    • Position of isotopes

    • Left gaps for discovery of elements

    • Position of hydrogen

    Correct Answer
    A. Left gaps for discovery of elements
  • 5. 

    Who proposed the law of octaves?

    • Mendeleev

    • Newland

    • Mosely

    • Dobereiner

    Correct Answer
    A. Newland
  • 6. 

    Demerit of Newland's classification is 

    • Only lighter elements could be arranged

    • Only heavier elements could be arranged

    • Position of isotopes

    • Position of hydrogen

    Correct Answer
    A. Only lighter elements could be arranged

Quiz Review Timeline (Updated): Mar 19, 2022 +

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  • Current Version
  • Mar 19, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • May 05, 2020
    Quiz Created by
    Manjubrijesh2014
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