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The elements which are radioactive and h...

The elements which are radioactive and have been named after the name of planet are

A

Hg

B

Np

C

Lu

D

Ra

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Verified by Experts

The correct Answer is:
B
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ALLEN-Periodic Table -All Questions
  1. Which of the following is not correctly matched

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  2. The elements which are radioactive and have been named after the name ...

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  3. Which of the following statement is not correct

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  4. Which of the following statement is not correct

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  5. Which of the following is not correctly matched

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  6. An element whose IUPAC name is ununtrium (UUT) belong to

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  7. If Z(eff) of sodium is 'x' then Z(eff) of calcium is :-

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  8. Lanthanoid contraction will not have any influence when we compare siz...

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  9. In which one of the following pairs is the radius of the second specie...

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  10. Which of the following species will have the largest and the smallest ...

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  11. In which pair the first atom or ion is not larger than the second :-

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  12. Which one of the following statements is incorrect ?

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  13. Which of the following properties among halogens decreases from fluori...

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  14. The correct values of ionization enthalpies(in KJ "mol"^(-1)) of Si, P...

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  15. From the ground state, electronic configuration of the elements given ...

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  16. An element has successive ionization enthalpies as 940 (first),2080,30...

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  17. The incorrect statement among the following is :-

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  18. Ionisation energy depends upon:

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  19. The first ionisation enthalpy (Delta(i)H^(o-)) values of the third per...

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  20. Which one of the following statements is incorrect in relation to ioni...

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