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प्रश्न
State the merits of Mendeleev's classification of elements.
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
What were the criteria used by Mendeleev in creating his Periodic Table?
What property do all elements in the same column of the Periodic Table as boron have in common?
What was the Mendeleev's basis for the classification of elements?
State the periodic law on which Mendeleev's periodic table table was based. Why and how was this periodic law changed?
In Mendeleev's periodic table, why was there no mention of noble gases like helium, neon and argon?
Besides gallium, which two other elements have since been discovered for which Mendeleev had left gaps in his periodic table?
In Mendeleev's periodic table, gap was not left for one of the following elements. This element is:
(a) gallium
(b) beryllium
(c) germanium
(d) scandium
Why could no fixed position be given to hydrogen in Mendeleev's periodic table?
The elements from the zero group are called _______.
Find the odd one out and give its explanation.
