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(i) Newlands proposed the law of octaves...

(i) Newlands proposed the law of octaves.
ii) The law of octaves was not valid for elements that had atomic masses higher than calcium.
iii) Newlands left blanks for new elements in his periodic table.
Which statement is wrong?

A

`1`. (i).

B

`2`. (ii).

C

`3`. (iii).

D

`4`. (ii)  and (iii).

Text Solution

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. The most electronegative element is

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  2. Raju : All the known elements at the time of Dobereiner. could not be ...

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  3. (i) Newlands proposed the law of octaves. ii) The law of octaves was ...

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  4. State and give one example for Dobereiner's law of triads and Newland'...

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  5. "Select the common point/s' in Dobereiner and Newlands Laws. i) Atomic...

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  6. Assertion (A) : Mendeleeff placed "Be, Mg and Ca" in one group. Reaso...

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  7. Which one is not a salient features of the Mendeleeff's periodic table...

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

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

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

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

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

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

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

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

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

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

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

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

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

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