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what is the relationship between two element X and Y whose atomic number are 18 and 20 respectively but their masses number remains same as 40

    • Posted by Ankit Chowrasiya 6 years ago

    CBSE > Class 09 > Science
    • 1 answers

    Kushagra Maheshwari 6 years ago

    I think that both of the elements are isobars

    0Thank You

    ANSWER
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