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How many elements were known at …

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How many elements were known at the time of mendeleef? Name one element which was not known at the time of mendeleef, but when discovered later found to have the same properties as predicted by mendeleef.

    • Posted by Priyanshi Singh 6 years, 2 months ago

    CBSE > Class 10 > Science
    • 11 answers

    Aryan Patell 6 years, 2 months ago

    I have answered all yours question downward plsss seee

    0Thank You

    Priyanshi Singh 6 years, 2 months ago

    OK

    0Thank You

    Abhigya Mehra 6 years, 2 months ago

    Gallium scandium germanium 63

    1Thank You

    Priyanshi Singh 6 years, 2 months ago

    And how many elements were known at that time??

    0Thank You

    Aryan Patell 6 years, 2 months ago

    I think

    1Thank You

    Aryan Patell 6 years, 2 months ago

    Then it is misprinted

    0Thank You

    Manasvi Mittal 6 years, 2 months ago

    Hmm.... Gallium.... correct????

    0Thank You

    Priyanshi Singh 6 years, 2 months ago

    No in my book it is written mendeleef.

    0Thank You

    Aryan Patell 6 years, 2 months ago

    Gallium

    0Thank You

    Aryan Patell 6 years, 2 months ago

    I think 63

    0Thank You

    Aryan Patell 6 years, 2 months ago

    It's meendleev

    0Thank You

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