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Observe the following statements. Q I. T...

Observe the following statements.
Q I. The physical and chemical properties of elements are periodic functions of their electronic confirguration.
Q II. Electronegativity of fluorine is less than the electronegativity of chlorine.
Q III. Electropositive nature decreases from top to bottom in a group.
The correct answer is

A

I, II and III are correct

B

Only I is correct

C

Only I and II are correct

D

Only II and III are correct

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2B
  1. Match the following correctly

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  2. Which of the following is not correct in the case of Be and Al ?

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  3. Observe the following statements. Q I. The physical and chemical prope...

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  4. The following are some statements about periodic properties i) Atomi...

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  5. The following are some statements about diagonal relationship i) Th...

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  6. Three elements, X,Y and Z belong to the same period. Their oxides are ...

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  7. The elements 'X', 'Y' and 'Z' form oxides which are acidic, basic and ...

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  8. The formation of O^(-2) and N^(-3) are endothermic, but metal oxides ...

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  9. Some statements are given below. Among them, the correct statement are...

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  10. Ce-58 is member of

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  11. The radii of F, F^(-), O, O^(2-) are in the order

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  12. O^(2-) and Si^(4+)are isoelectronic ions. If the ionic radius of O^(2-...

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  13. lonic radii (in oversetoA) of As^(3+), Sb^(3+) and Bi^(3+) follow the ...

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

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  15. Lanthanide contraction occurs because

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  16. Radius of Cs^(+) ion is less than that of A) Fluoride ion B) Chlo...

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  17. The sizes of A, A^+ and A^- follows the order

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  18. Which of the following has the largest atomic radius ?

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  19. Which of the following grouping represents a collection of iso-electio...

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  20. Which is not related to lanthanide contraction

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