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  5. The d-and f-Block Elements / d तथा f ब्लॉक के तत्व

12th Class Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank 12th CBSE Chemistry The d-and f-Block Elements

  • question_answer
      Which compound is used as phosphors in T.V. screens?

    Answer:

      Lanthanoid oxide.          


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