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Trends in Modern Periodic Table

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what are the basis of classification of elements in the long form of periodic table

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Solution

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The basis of classification of elements in the long form of periodic table is their atomic number.

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Similar questions

(a) What was Mendeleev's basis for classification of elements ?

(b) Mendeleev's contributions to the concept of periodic table laid the foundation for the Modern Periodic Table.Give reasons.

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. On the basis of electronic configuration, all the elements in the long form of the periodic table have been grouped in :

(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 ?

What is the basis of long form of periodic table?

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