What is the basis of long form of periodic table?

Atomic mass

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Atomic no

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Atomic size

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Metallic & non-metallic character

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Solution

The correct option is B
Atomic no

According to modern periodic law, Atomic number forms the basis of construction of modern periodic law

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Similar questions

Q. Across a period: Atomic size and metallic character ____ while I.P, E.A, E.N and non-metallic character and nuclear charge_____.

Q. Down a group, atomic size and metallic character ____ while I.P, E.A, E.N and non-metallic character and nuclear charge _____.

Q. What changes occur in the following on going from left to right in a period of the Periodic Table?
(i) Atomic size
(ii) Metallic character
(iii) Number of valence electrons

As we move across the period, the size of the atom decreases which means the attraction between the nuclei and the electrons increases so the metallic character decreases. And Hence, the non-metallic character increases.

(a) How does the size of atoms (atomic size) generally vary in going from left to right in a period of the periodic table? Why does it vary this way?

(b) What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?

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What is the basis of long form of periodic table?

The correct option is B Atomic no According to modern periodic law, Atomic number forms the basis of construction of modern periodic law

The correct option is B
Atomic no

According to modern periodic law, Atomic number forms the basis of construction of modern periodic law