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Which of the following pairs of species ...

Which of the following pairs of species have nearly same size?

A

`Rb^(+),O^(2-)`

B

`Li^(+),Mg^(2+)`

C

`Mg^(+),Na^(+)`

D

`Cl^(-),Na^(+)`

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The correct Answer is:
A, B
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DINESH PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-All Questions
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  2. Which of the following statements are correct?

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  3. Which of the following pairs of species have nearly same size?

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  4. The correct order of the second ionisation potential of carbon, nitrog...

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  5. The correct order of IE(2) of C, N, O and F is

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  6. Atomic radii of fluorine atom and neon atom in angstrom units are resp...

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  7. The electronegativity of the following elements increases in the order

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  8. The value in electron-volt per atom which represent the first ionisati...

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  9. Which one of the following is the smallest in size?

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  10. Which of the following statements is/are false for the long form of th...

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  11. The first ionisation potential of Na,Mg,Al and Si are in the order

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  12. The outermost electronic configuration of the element with highest val...

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  13. Amongst the following elements (whose electronic configuration an gi...

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  14. Which one of the following is correct order of increase of size?

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  15. The statement that is not correct for periodic classification of eleme...

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  16. Which of the following has largest size ?

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  17. The decreasing order of the second ionisation potential of K , Ca and ...

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  18. The incorrect statement Among the following is A)The first ionisation...

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  19. Ionic radii of :

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  20. The correct order of radii is:

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