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| Q. |
Modern periodic law had been given by |
| A. | Moseley |
| B. | Mendeleev |
| C. | Lother-Mayer |
| D. | Lavoisier |
| Answer» A. Moseley | |
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Explanation: In 1913, H.G.J Moseley in England proved that the more fundamental properties of an element are its atomic number. Therefore he suggested that the basis of classification of elements should be atomic number. |
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