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Question
State the merits of Mendeleev's classification of elements.
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Solution
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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RELATED QUESTIONS
How could the Modern Periodic Table remove various anomalies of Mendeleev’s Periodic Table?
In the classification of the them known elements, Mendeleev was guided by two factors. What are those two factors?
Which group of elements could be placed in Mendeleev's periodic table later on, without disturbing the order? Give reason.
What name were given by Mendeleev to the then undiscovered element scandium.
What name were given by Mendeleev to the then undiscovered element gallium?
What name were given by Mendeleev to the then undiscovered element germanium?
In Mendeleev's periodic table, why was there no mention of noble gases like helium, neon and argon?
In Mendeleev's periodic table, gaps were left for the elements to be discovered later on. An element which found a vacant place in the periodic table later on is:
(a) Be
(b) Si
(c) Ge
(d) Se
Eka boron : Scandium : : Eka Aluminum : _______
Find the odd one out and give its explanation.
