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Which of the following pairs have approx...

Which of the following pairs have approximately the same atomic radii?

A

Zr and Hf

B

Al and Mg

C

Al and Ga

D

Na and Ne

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The correct Answer is:
A, C
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  2. An element 'X' present in its ground state, the value of principal ann...

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  3. Which of the following pairs have approximately the same atomic radii?

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  4. The correct order of radiii is/are:

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  5. The first ionisation energy of first atom is greater than that of seco...

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  6. Ionization energy of an element is:

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  7. Consider the following ionization steps : M(g) rarr M^(+)(g) +e^(-),...

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  8. Select the correct order of periodic properties of species :

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  9. Select the incorrect statement(s)/order (s):

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  10. Consider the following values of I.E.(eV) for elements W and X: {:("...

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  11. The sum of IE(1) and IE(2), IE(3) and IE(4) for element P and Q are g...

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  12. Consider vlaue of all four quantum number of last electrons and magnet...

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  13. Consider the successive ionisation energy for an element 'A' . IE(1) ,...

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  14. According to Slater's rule , correct order of Z("eff") on valence shel...

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  15. Which of the following order is/are correct?

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  16. Correct order of electron affinity is/are:

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  17. Which of the following statement(s) is/are correct?

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  18. Electron affinity of the elements or ions shown correctly?

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  19. Which of the following statement regarding halogens is/are correct?

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  20. Which of the following statements are correct?

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