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The term periodicity in the properties o...

The term periodicity in the properties of element are arranged in the increasing order of their atomic numbers similar elements

A

Reoccur after a fixed interval

B

Reoccur after certain regular interval

C

Form vertical groups

D

Form horizontal rows

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The correct Answer is:
B
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NARAYNA-PERIODIC TABLE -All Questions
  1. Which statement is incorrect for the d-block elements

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  2. When a neutral atom is converted to the anion its

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  3. The term periodicity in the properties of element are arranged in the ...

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  4. The correct order of variation in the sizes of atoms is

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  5. Which one of the following has the largest radius

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

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  7. Which one is the correct order of the size of the iodine species ?

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  8. Atomic radius is measured by

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  9. Vander waal's radius is used for

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  10. Separation of lanthanides from their mixture is not easy because of

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  11. If atomic radius of F is XA^(0) then atomic radius of Ne could be

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  12. If an element 'X' is assumed to have the types of radii, then their or...

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  13. Covalent radius of Liis 123 pm .The crystal radius of Li will be:

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  14. O^(2-) and Si^(4+) are isoelectronic ions. If the ionic radius of O^(2...

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  15. Which set represents isoelectronic species ?

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  16. Which of the following pairs of ions have the same electronic configur...

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  17. Which one of the following groups represent a collection of isolectron...

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  18. In a period, atom with smaller radius is

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  19. As number of protons is the nucleus increases, atomic radius gradually...

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  20. The Lanthanide contraction is responsible for the fact that

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