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As per the Modern periodic law, the phys...

As per the Modern periodic law, the physical and chemical properties of elements are periodic functions of their

A

Atomic number

B

Electronic configuration

C

Atomic weight

D

Atomic size

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The correct Answer is:
A
As per the Modern periodic law, the physical and chemical properties of elements are periodic functions of their atomic number.
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The basis of modern periodic law is

PASSAGE - 3 : In modern periodic table there is gradation in the properties of elements. In a period the Ionisation energy, Electron affinity, Electro negativity, Non-Metallic nature increases. In a group the atomic size, metallic nature, reducing properties and densities of elements increases. The pair of elements with equal electro negativities

PASSAGE - 3 : In modern periodic table there is gradation in the properties of elements. In a period the Ionisation energy, Electron affinity, Electro negativity, Non-Metallic nature increases. In a group the atomic size, metallic nature, reducing properties and densities of elements increases. Whic pair of elements have positive electron affinity values

SIA PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODIC PROPORTIES-MCQ
  1. O^(2-) and Si^(4+)are isoelectronic ions. If the ionic radius of O^(2-...

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  2. Which of the following species has the highest ionisation potential?

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  3. As per the Modern periodic law, the physical and chemical properties o...

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  4. Which one of the following elements has the highest first ionisation p...

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  5. Of the following the one with largest size is

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  6. The pair of elements that have similar chemical properties are

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  7. The order of decrease in atomic radii for Be, Na and Mg is

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  8. The name of the element with atomic number 100 was adopted in honour o...

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  9. Which one of the following would you expect to have highest electroneg...

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  10. Which one of the following is the largest ion?

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  11. The element that has the lowest first ionisation potential is

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  12. Which of the following electronic configuration corresponds to an iner...

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  13. The halogen with the highest ionisation potential is

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  14. In the long form of Periodic Table, the elements having lowest ionisat...

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  15. A1^(3+) ion has a lower ionic radius than Mg^(2+) ion because

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  16. The most electronegative element is

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  17. Ionisation potential of Is electron is ... than that of 2s electron in...

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  18. Kr nulceus has a ..... radius than that of Ba.

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  19. EN of an atom is given by the average of EA and......

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  20. Among the alkali metals, the metal with the highest ionisation potenti...

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