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The no. of elements which are more elec...

The no. of elements which are more electropositive than 'Fe' in the following Sc,Rb,Te,F & Ca

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NARAYNA-PERIODIC TABLE -All Questions
  1. The number of elements among the following atomic numbers that are p b...

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  2. Among the following oxides, how many of them are amphoteric oxides? ...

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  3. The no. of elements which are more electropositive than 'Fe' in the f...

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  4. The no. of paramagnetic species in the following . Na^(+),Cl^(-), Sn^(...

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  5. 1.0 g of Mg atom ("atomic mass" = 24.0 "amu") in the vapour phase abso...

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  6. The ionisation energy of Li is 500 KJ/mole. The amount of energy requi...

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  7. The first IP lithium is 5.41eV and electron gain enthalpy of Cl is -3....

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  8. How many of the following statements are correct according to Mendelee...

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  9. Match the following columns

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  10. Match the following columns

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  11. Match the following columns

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  12. Match the following columns

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  13. Match the following columns

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  14. The atomic radii of transition elements from Cr to Cu are almost equal...

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  15. Fluorine does not form oxyacids unlike other halogens because

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  16. The screening effect of d-electrons is

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  17. Which of the following is the correct order of increasing radius of sp...

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  18. Two elements A and B belonging to same group have electrones affinity ...

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  19. The effective nuclear charge for valence electron in underset(7)" N"^(...

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  20. Astatine is a radioactive halogen. It is a solid at room temperature b...

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