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Arrange the elements in increasing order...

Arrange the elements in increasing order of atomic radius Na , Rb , K , Mg

A

`Na lt K lt Mg lt Rb`

B

`K lt Na lt Mg ltRb`

C

`Mg lt NaltK ltRb`

D

`Rb lt K lt Mg lt Na`

Text Solution

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The correct Answer is:
C
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PATHFINDER-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. Atomic radii of fluorine and Neon in Angstrom units are given by

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  2. Which of the following has largest radius

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  3. Arrange the elements in increasing order of atomic radius Na , Rb , K ...

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  4. Consider the isoelectronic series: K^+ , S^(2-) , Cl^- andCa^(2+) the ...

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  5. Highest size will be of

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  6. Ionization potential of Na would be numerically the same as

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  7. The IP1 , IP2 , IP3 , IP4 and IP5 of an element are 7.1 , 14.3 , 34.5 ...

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  8. The screening effect of d-electrons is

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  9. Correct orders of IE1 are (i) Li lt B lt Be lt C (ii) O lt N lt F ...

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  10. The maximum tendency to form unlpositive ion is for the element with t...

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  11. The second ionisation potentials in electron volts of oxygen and fluor...

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  12. A sudden large jump between the values of 2nd and 3rd IP of an element...

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  13. The ionization energy of sodium is 495 kJmol^(-1) How much energy is n...

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  14. IP1 and IP2 of Mg are 178 and 348 K cal mol^(-1). The enthalpy require...

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  15. The correct order of second I.P.

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  16. In which case the energy released in minimum

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  17. Second electron affinity of an element is

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  18. The electron affinity values for the halogens shown the following tren...

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  19. Electron affinities of O , F, S , and Cl are in the order

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  20. Increasing order of Electron affinity for following configuration. 1s...

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