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प्रश्न
State any three limitations of Mnedeleev's classification of elements.
उत्तर
imitations of Mendeleev's classification of elements are:
i) Mendeleev's periodic law could not explain the position of isotopes in the periodic table.
ii) Mendeleev's periodic law could not assign a proper position to the element hydrogen in the periodic table.
iii) Mendeleev's periodic law failed to explain the wrong order of atomic masses of some elements.
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संबंधित प्रश्न
What were the criteria used by Mendeleev in creating his Periodic Table?
What name were given by Mendeleev to the then undiscovered element scandium.
What name were given by Mendeleev to the then undiscovered element germanium?
Why did Mendeleev leave some gaps in his periodic table?
Which group of elements was missing from Mendeleev's original 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 _______.
Write the name.
The family of elements having zero valency.
Match the column:
| Column ‘A’ | Column ‘B’ |
| Alkali metals | (a) Group 18 |
| Halogens | (b) Group 1 |
| Noble gases | (c) Group 17 |
