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Five successive ionisation enthalpies of...

Five successive ionisation enthalpies of an element are 800, 2427, 3638, 25024 & `32824kJ*mol^(-1)` respectively. The number of valence electrons of the element is-

A

3

B

5

C

4

D

2

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The correct Answer is:
A
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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-MCQ HOTSPOT
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  2. An element belongs to group 17 ad the fourth period of the periodic ta...

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  3. Five successive ionisation enthalpies of an element are 800, 2427, 363...

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  4. Choose the correct set of ionic radii among the following-

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  5. Electron affinity (kJ*mol^(-1)) of three halogens X, Y, Z are -349, -3...

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  6. The correct order of ionic radii is-

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  7. The ionisation enthalpy of lithium is 520 kJ*mol^(-1). The amount of e...

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  8. Electronic conifguration 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(9) indicate...

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  9. In the periodic table metals used as catalyst belongs to-

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  10. Oxide of an element having configuration [Ne]3s^(1) is-

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  11. Which one of the following orders is not in accordance with the prope...

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  12. In which of the following process energy is absorbed-

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  13. In which of the following pairs do both the metals have identical valu...

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  14. In which of the following pairs the difference between the covalent ra...

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  15. The increasing order of the first ionisation enthalpies of the element...

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  16. Which group of atoms have nearly same atomic radius-

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  17. The lattice energy is highest for-

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  18. The correct order of lattice energy for lithium halides is-

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  19. An element with atomic number 20 is most likely to combine with the el...

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  20. K^(+),Cl^(-),Ca^(2+),S^(2-) ions are isoelectronic. The decreasing ord...

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