10th Class Science Sample Paper Science Olympiad Model Test Paper-4

  • question_answer
    The atom of an element has electronic configuration 2, 8, 5. In which one of the following groups the element should be placed in modern periodic table?

    A) Group 1

    B) Group 3

    C) Group 5

    D) Group 15

    E) None of these

    Correct Answer: D


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