1.

डॉबेराइनर के त्रिक सिद्धांत पर संक्षिप्त टिप्पणी लिखिए ।

Answer»

Answer:

dobereiner try to arrange the elements in order to their increasing atomic mass arrange .he element in the TRAIDS of the three GROUP he observed that the atomic mass of the MIDDLE element was roughly equal to the AVERAGE of the other two element.



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