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Free pdf download of class 12 chemistry revision notes & short key-notes for chapter 7 - the p-block elements to score high marks in exams, prepared by expert chemistry teachers from latest edition of cbse(ncert) books. Name _ date class modern chemistry • chapter 7 homework 7-1 (pp 203-206) vocabulary write true or false for each statement 1 a chemical formula indicates the relative number of molecules of each kind in a chemical compound.
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