आधुनिक आवर्त नियम का प्रति – McqOptions

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1.	आधुनिक आवर्त नियम का प्रतिपादन किया था -
A.	मोसले ने
B.	डोबरेनर ने
C.	मेंडेलीफ ने
D.	न्यूलैंडस ने
Answer» B. डोबरेनर ने

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