Q.

In Mendeleev’s periodic table, he arranged the elements in the order of:

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a

Increasing atomic radii

b

Increasing Atomic Mass

c

Increasing atomic number

d

Increasing lusture

answer is B.

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Detailed Solution

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Mendeleev’s periodic law stated that, “ When elements are arranged in the increasing order of their atomic masses, the elements having similar physical and chemical properties get repeated after regular intervals”. 

At first Mendeleev classified 63 known elements and arranged them in order of their increasing atomic masses.

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In Mendeleev’s periodic table, he arranged the elements in the order of: