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Limitations of Mendeleev's Periodic Table

Among the fol...

Question

Among the following statements the one that is not true about Mendeleev's Periodic Table is:

A

Some elements in the same group differ in their properties

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B

Elements of group 7 and 8 were arranged on the basis of equivalent weights

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C

The position of hydrogen was not justified

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D

Elements were arranged on the basis of atomic weights

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Solution

The correct option is B
Elements of group 7 and 8 were arranged on the basis of equivalent weights

In Mendeleev's periodic table, elements were arranged on the basis of atomic weights.

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Similar questions

(a) Name an element whose properties were predicted on the basis of its position in Mendeleev's periodic table.

(b) Name two elements whose atomic weights were corrected on the basis of their positions in Mendeleev's periodic table.

(c) How many elements were known at the time of Mendeleev's classification of elements ?

Q. Which of the following statement(s) about the Modern periodic table is/are incorrect?
(i) The elements in the Modern periodic table are arranged on the basis of their decreasing atomic number.
(ii) The elements in the Modern periodic table are arranged on the basis of their increasing atomic number
(iii) Isotopes are placed in an adjoining group(s) in the periodic table.

Q. Which of the following statement is correct in regard to the classification of elements?

(a) Elements in modern periodic table are arranged on the basis of increasing atomic masses.
(b) Elements in Mendeleev's periodic table are arranged on the basis of increasing atomic numbers.
(c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
(d) In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.

Q. Arrange the following statements in a chronological order.
(a) Some elements be grouped in set of three elements in the increasing order of their atomic weights in which the atomic weight of the middle element was found to be the arithmetic mean of the atomic weights of the other two elements.
(b) The physical and chemical properties of elements are periodic functions of their atomic numbers.
(c) The physical and chemical properties of elements are periodic functions of their atomic weights.
(d) When elements are arranged in the increasing order of their atomic weights, the eighth element resembles the first in physical and chemical properties just as the eighth note on a musical scale resemble the first one.

In the modern periodic table, the elements are arranged on the basis of their increasing atomic number.

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Limitations of Mendeleev's Periodic Table

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