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Which is not true about noble gases ?...

Which is not true about noble gases ?

A

They exist in atomic form

B

They are radioactive in nature

C

They are non-metallic in nature

D

Xenon is the most reactive among these

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. Choose the correct answer for the following matching.

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  2. Match the following:

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  3. Which is not true about noble gases ?

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  4. The electronic configuration of the first artifical element………

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  5. What type of oxide would Eka-aluminium form ?

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  6. Which of the following statements is not correct ?

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  7. Point out the correct statement

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  8. Which is not the characteristic of a period ?

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  9. Which defect of Mandeleeff's periodic table is automatically overcome ...

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  10. Which of the following indicates the correct order of variation in ato...

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  11. Choose the correct answer for the following matching :

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  12. Elements belonging to the same period have

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  13. The scientist who made maximum contribution towards periodic table was

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  14. Which of the following sets of atomic numbers corresponds to the atomi...

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  15. Atomic numbers of last elements of 'd' block and p block of incomplete...

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  16. The outermost shell of a representative element contains x electrons a...

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  17. Which of the following statements about the modern periodic table are ...

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  18. Choose the right properties of periodic table. (a) Atomic radius incr...

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  19. Which of the following species does have electrons equal to 18 ? (a) K...

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  20. Pick out the correct statements about chlorine atom. (a) Chlroine is ...

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