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The elements in which 4f orbitals are pr...

The elements in which 4f orbitals are progressively filled up are called

A

actinides

B

transition elements

C

lanthanides

D

halogens

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The correct Answer is:
C
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PATHFINDER-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. Which of the following pairs of atomic numbers represent elements belo...

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  2. All the elements in a group in the periodic table have the same

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  3. The elements in which 4f orbitals are progressively filled up are call...

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  4. Which of the following elements does not belong to first transition se...

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  5. The name of 'rare earths' is used for

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  6. In genral outer electronic configuration of the elements of group ViB ...

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  7. What is the group no.of an element having atomic no.105?

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  8. Which of the following ionic radius would be maximum?

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  9. The decreasing order of size of the following ions is

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  10. Na+,Mg^(++),Al^(+3),Si^(+4) are isoelectronics the order of their ioni...

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  11. The covalent and van der waals radii of hydrogen respectively are

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  12. which ion possessses the smallest radius?

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  13. Which of the following isoelectronic ions has lowest ionization energy...

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  14. The first ionization potential in electron volts of nitrogen and oxyge...

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  15. The first ionization potential of Na,Mg,Al and Si are in the order

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  16. The correct order of decreasing first ionization energy is

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  17. The correct order of electron affinity is

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  18. The correct ordrr of electron affinity among the following is

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  19. The lower electron affinity of fluorine than that of chlorine is due t...

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  20. Electron affinity of inert gases is

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