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प्रश्न
State the merits of Mendeleev's classification of elements.
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उत्तर
Merits of Mendeleev's classification of elements:
- Grouping of elements
- Gaps for undiscovered elements: Mendeleev left some gaps in his periodic table for subsequent inclusion of elements not known at that time.
- He predicted the properties of the then-unknown elements on the basis of properties of elements lying adjacent to the vacant slots (eka-aluminum and eka-silicon).
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संबंधित प्रश्न
The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.
Why do you think the noble gases are placed in a separate group?
What was the Mendeleev's basis for the classification of elements?
Name two elements whose properties were predicted on the basis fo their positions in Mendeleev's periodic table.
What name were given by Mendeleev to the then undiscovered element germanium?
State any three limitations of Mnedeleev's classification of elements.
According to Mendeleev's periodic law, the elements were arranged in the periodic table in the order of: ______
The elements from the zero group are called _______.
Write the name.
The family of group 1 elements.
Write the name.
The family of elements having zero valency.
