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प्रश्न
Name an element whose properties were predicted on the basis of its position in Mendeleev's periodic table.
उत्तर
Eka-silicon
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संबंधित प्रश्न
State whether the following statement is true of false:
According to Mendeleev's periodic law, the properties of elements are a periodic function of their atomic numbers.
What were the two criteria used by Mendeleev to classify the elements in his periodic table?
State Mendeleev's periodic law.
What were the defects and anomalies in Mendeleeff's Periodic Table and how are they resolved by Moseley?
Give a reason for the following:
Mendeleev's contributions to the periodic table laid the foundation for the Modern Periodic Table.
Write the molecular formula of the oxide of any one of the elements in Mendeleev’s periodic table.
On which basis Mendeleev organised periodic law?
What challenges did Mendeleev face in following periodic law?
Which of the following oxide is most basic?
Mendeléev predicted the existence of certain elements not known at that time and named two of them as Eka-silicon and Eka-aluminium.
- Name the elements which have taken the place of these elements
- Mention the group and the period of these elements in the Modern Periodic Table.
- Classify these elements as metals, non-metals or metalloids
- How many valence electrons are present in each one of them?
