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Elements have been arranged in the follo...

Elements have been arranged in the following sequence on the basis of their increasing atomic masses: F, Na, Mg, Al, Si, P, S, CI, Ar, K.
a] Pick two sets of elements which have similar properties.
b) The given sequence represents which law of classification of elements?

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a] Two sets of elements that show similar properties are: F and Cl, Na and K.
b] The given sequence represents elements Newlands. law of octaves. As per this law, elements are arranged in increasing order of their atomic masses and every 8th element shows similar properties to that of the 1st element.
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ZEN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-ZEE ADDITIONAL QUESTIONS SECTIONS (SHORT ANSWER (SA) TYPE QUESTIONS)
  1. Elements have been arranged in the following sequence on the basis of ...

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  2. Write the formulae of chlorides of Eka-silicon and Eka-aluminium, the ...

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  3. Arrange the following elements in increasing order of their atomic rad...

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  4. Identify and name the metals out of the following elements whose elect...

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  5. Mention any two demerits of the long form of the periodic table.

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  6. Why is hydrogen placed separately on the top left corner of the Modern...

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  7. Why did the law of triads fail?

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  8. Mention the merits of Newlands' law of octaves.

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  9. What were the limitations of Newlands' law of Octaves ?

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  10. Why do all elements of the same group have similar properties?

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  11. The atomic numbers of three elements A, B, and Care 12, 18, and 20 res...

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  12. Taking the example of an element of atomic number 16, explain how the ...

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  13. The electronic configuration of an element 'X' is 2, 8, 8, 2. To which...

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  14. All the members of group I are metals. Li and Na react with water rapi...

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  15. Atomic number is considered to be a more appropriate parameter than at...

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  16. How does the electronegativity changes as we move from left to right a...

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  17. How would the tendency to gain electrons change as you go from left to...

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  18. a) How does electropositivity of elements get affected as we move: (i)...

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  19. Why are metals electropositive and non-metals electronegative in natur...

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  20. Name three elements with seven valence electrons in their outermost sh...

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