NEET > Chemistry Class 11 > Mendeleev's Periodic Table
Mendeleev's Periodic Table Video Lecture - Chemistry Class 11 - NEET
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195 videos|336 docs|190 tests
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FAQs on Mendeleev's Periodic Table Video Lecture - Chemistry Class 11 - NEET
| 1. What is Mendeleev's periodic table? |  |
Ans. Mendeleev's periodic table is a tabular arrangement of chemical elements based on their atomic numbers, electron configurations, and recurring chemical properties. It was developed by Russian chemist Dmitri Mendeleev in 1869 and is widely regarded as one of the most significant achievements in the field of chemistry.
| 2. How is Mendeleev's periodic table organized? | |
Ans. Mendeleev's periodic table is organized in rows called periods and columns called groups. The elements are arranged in order of increasing atomic number from left to right and top to bottom. The elements in the same group have similar chemical properties and exhibit periodic trends.
| 3. What are the advantages of Mendeleev's periodic table? | |
Ans. Mendeleev's periodic table has several advantages. Firstly, it provides a systematic organization of elements based on their properties, which helps in understanding and predicting the behavior of elements. Secondly, it allows for the identification of trends and patterns in the properties of elements. Lastly, it provides a framework for classifying newly discovered elements and incorporating them into the existing table.
| 4. How did Mendeleev predict the existence of undiscovered elements? | |
Ans. Mendeleev used the periodic table's organization to predict the existence and properties of undiscovered elements. By leaving gaps in the table and arranging elements with similar properties in the same group, he could predict the properties of elements that were yet to be discovered. When new elements were discovered that matched the predicted properties, it provided evidence for the accuracy of Mendeleev's periodic table.
| 5. How has Mendeleev's periodic table evolved over time? | |
Ans. Mendeleev's periodic table has evolved over time with the discovery of new elements and advancements in atomic theory. Initially, Mendeleev's table had gaps for undiscovered elements, which were later filled as those elements were discovered. The table also underwent changes in the arrangement of elements based on the discovery of additional properties and the development of atomic structure theories. Today, the modern periodic table is a refined version of Mendeleev's original concept.
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Video Description: Mendeleev's Periodic Table for NEET 2023 is part of Chemistry Class 11 preparation.
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195 videos|336 docs|190 tests
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Timeline
| 00:00 | Introduction |
| 00:34 | Mendeleev Periodic Table |
| 01:35 | Eka-Aluminium |
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