| The existence of an element with an atomic number of 21 was predicted in 1869 by Dmitri Mendeleev. |
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| The periodic chart developed by Russian chemist Dmitri Mendeleev showed that an element should be found between neodymium and samarium. |
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| Mendeleev demonstrated the usefulness of the chart in predicting the existence and properties of undiscovered elements. |
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| And there were also nods to Mendeleev, who codified the Periodic Table of Elements, and Igor Sikorsky, the inventor and aviator. |
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| Although I am a big fan of the Russian Chemist Mendeleev I am fascinated by the fuel cell. |
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| In true genius fashion, Mendeleev made sure to leave gaps for missing elements, accurately predicting that these spaces would later be filled when additional elements were discovered. |
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| Dmitri Mendeleev, the Russian chemist who published what is regarded as the first widely recognised periodic table, has been celebrated with his own Google doodle on what would have been his 182nd birthday. |
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| When Mendeleev first put together the periodic table of the elements, he defined very clearly the order of the elements by arranging them in order by atomic number. |
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| Many of technetium's properties were predicted by Dmitri Mendeleev before the element was discovered. |
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| In 1871, Mendeleev predicted this missing element would occupy the empty place below manganese and have similar chemical properties. |
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| Russian chemist Dmitry Mendeleev invented the Periodic table, the main framework of modern chemistry. |
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| In chemistry, Dmitri Mendeleev, following the atomic theory of John Dalton, created the first periodic table of elements. |
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| To such materials refractory of 5a and 6a groups of Mendeleev periodic system with cubic crystalline lattice can be related. |
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| She wrote her master's thesis on solid rocket propellants during a 10-month research stay at the Mendeleev University of Chemical Technologies in Moscow, Russia. |
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