11th Class Chemistry Some Basic Concepts of Chemistry Question Bank 11th CBSE Chemistry Some Basic Concepts of Chemistry

  • question_answer When is the law of definite proportions not obeyed?

    Answer:

                                           The law of definite proportions is not obeyed when the element exists in isotopic forms. For example, in \[HCl\] the elements \[H\] and \[Cl\] may be in the ratio of 1 : 35 and 1 : 37 by mass in case \[^{35}Cl\]  and \[^{37}Cl\] isotopes are considered.


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