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Assertion (A) : It is a better way of ar...

Assertion (A) : It is a better way of arranging the elements in the periodic table is according to the increasing atomic number. Reason (R) : This arrangement. according to increasing atomic number eliminated the problem of anomalous series.

A

Both A and R are true and R is a correct explanation of A

B

Both A and Rare true and R is not a correct explanation of A

C

A is true and R is false

D

Both are false

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. Which one is not a salient features of the Mendeleeff's periodic table...

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  2. A: The properties of elements are the periodic functions of their atom...

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  3. Assertion (A) : It is a better way of arranging the elements in the pe...

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  4. Z indicates in the notation ^A.Xz. i) Number of protons in the atom ii...

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  5. Assertion (A): Na' is a s-block element Reason (R) : 'Na' gets its las...

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  6. Assertion (A) : 'Cl' is a non-metal. Reason (R): Non-metal has five or...

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  7. (a) Lanthanoids and actinoids are belongs to 3rd group. b) Lanthanoids...

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  8. Assertion (A) : Lanthanides and Actinides are called as Inner  Transit...

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  9. Why do elements in the same group have similar physical and chemical p...

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

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  11. Pavan (P) : The general electronic configuration of alkali metal famil...

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  12. Assertion (A): ‘H' & 'He' belongs to period - 1. Reason (R) : 'H & 'He...

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  13. Assertion (A): The first period in periodic table contain only two ele...

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  14. Suneetha (A) : Third period contain 18 elements, because it has 3 subs...

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  15. James (A) : The positive ions of an element has less in size than its ...

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  16. Balu (B) : Valence of an element with  respect to hydrogen is the numb...

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  17. Valeney of Ca is

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  18. Assertion (A) : Atomic radii increase from top to bottom in a group of...

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  19. Assertion (A): Atomic radii of elements decrease across a period from ...

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  20. Assertion (A) : The size of Na^+ ion is less than 'Na' atom. Reason (R...

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