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Rn (Z=86) is the last noble gas discove...

Rn (Z=86) is the last noble gas discovered . Predict what will be the atomic number of the next noble gas to be discovered . Write its symbol.

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118,Uuo.
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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-ADDITIONAL SHORT ANSWERS
  1. Why are noble gases chemically inert?

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  2. Why d- block elements are known as transition element ?

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  3. Rn (Z=86) is the last noble gas discovered . Predict what will be the...

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  4. What are inner transition elements ?

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  5. In terms of electronic configuration what does elements of given peri...

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  6. Write the name and atomic number of the following elements (i) Th...

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  7. First ionisation potential of C- atom is greater than that of B atom ,...

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  8. Atomic number of elements X,Y,Z and A are 4,8,7 and 12 respectivity ....

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  9. Which has the stable electronic configuration : Ni^(2+)orFe^(+3). Wh...

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  10. Define covalent radius.

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  11. Define periodicity.

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  12. Out of Na and Mg , which has higher second ionisation energy?

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  13. Noble gases have maximum ionisation energy. Justify.

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  14. Which of the following species will have the largest and smallest siz...

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  15. The size of Cl^(-)=1.81ÅandCl=0.99Å. Explain.

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  16. How does the shielding effect caused by inner electrons affect the ion...

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  17. Larger the size of the atom ,lesser is the ionisation energy . Explain...

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  18. Define lonization enthalpy.

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  19. Noble gases have almost zero electron affinity give reason.

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  20. Which among the halogens would you expect to have the least electroneg...

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