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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
Besides gallium, which other elements have since been discovered that were left by Mendeleev in his Periodic Table? (any two)
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
What property do all elements in the same column of the Periodic Table as fluorine have in common?
What name were given by Mendeleev to the then undiscovered element gallium?
According to Mendeleev's periodic law, the elements were arranged in the periodic table in the order of: ______
Find the correlation:
Eka boron : Scandium : : Eka Aluminum : ______
Find the odd one out and give its explanation.
Describe the merits of Mendeleev’s periodic table?
Which one of the following does not increase while moving down the group of the periodic table?
Match the column:
| Column ‘A’ | Column ‘B’ |
| Alkali metals | (a) Group 18 |
| Halogens | (b) Group 1 |
| Noble gases | (c) Group 17 |
