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n = 1: 1s ::n = 2: …………....

n = 1: 1s ::n = 2: ………….

A

2s

B

2s, 2p

C

1s, 2s

D

1s, 2s, 2p

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. Why are lanthanides and actinides placed separately at the bot...

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  2. If 'He' is not a inert gas, it should be placed in the group.

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  3. n = 1: 1s ::n = 2: ………….

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  4. Guess the period if it has only '8' elements and K, L shells.

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  5. Which one shrinks in size than atom : i) Na^+ii) Na iii) Cl^- iv) CI

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  6. The ionization potential of 'Be' is more than 'B'. This is due to

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  7. Assertion (A) : The size of Na^+ ion is less than 'Na' atom. Reason (R...

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  8. The element at the bottom of a group would be expected to show ...

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  9. The outermost main shell of an element is 'M' shell. This element belo...

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  10. Give example where the electronic configuration of an element does not...

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  11. generally show less electronegative character.

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  12. The atomic radius of Cl than Cl^- atom.

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  13. cannot be decomposed into further substance by a physical or chemical ...

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  14. Which one shrinks in size than atom : i) Na^+ii) Na iii) Cl^- iv) CI

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  15. Atomic number of the element which has diffe rentiating electron enter...

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  16. Which of the following is the correct order of electron affinity

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  17. Electron affinity of Fluorine is less than that of Chlorine because

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  18. Which one of the following ion has the highest value of ionic radius?

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  19. The size of anion is more than neutral atom. This is due to

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  20. Which of the following is correct with respect to size ?

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