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Artifical radioactive element are presen...

Artifical radioactive element are present in:

A

s-block

B

p-block

C

d-block

D

f-block

Text Solution

Verified by Experts

The correct Answer is:
d
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OP TANDON-RADIOACTIVITY AND NUCLEAR TRANSFORMATION -OBJ - A
  1. Enrichment of uranium is made by :

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  2. Let us consider emission of alphaparticle from uranium nucleus: .(92...

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  3. Artifical radioactive element are present in:

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  4. The .^(60)C isotope decays with a half life of 5.3 years. How long wou...

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  5. Which among the following is wrong about isodiaphere?

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  6. At radioactive equilibrium, the ratio between two atoms of radioactive...

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  7. The decay constant for an alpha- decay of Th^(232) is 1.58xx10^(-10)s^...

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  8. The number of neutrons accompanying the formation of .(54)Xe^(139) and...

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  9. Thiosulphate ion (S(2)O(3)^(2-)) on acidification changes to SO(2) alo...

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  10. A radioactive element X, decays by the sequence and with half-lives, g...

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  11. Identify [A] and [B] in the following: .(29)^(227)Ac overset(-beta)(...

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  12. beta-particle is emitted in radioactivity by

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  13. The nuclear reaction ""(29)^(63)Cu +""(2)^(4)He rarr ""(17)^(37)Cl +...

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  14. ""^(226)Ra disintegrates at such a rate that after 3160 years, only on...

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  15. ""(92)U^(235) nucleus absorbs a neutron and disintegrates into ""(54)X...

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  16. The radioisotope , tritium (""(1)^(3)H) has a half-life of 12.3 years....

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  17. The radioactive nuclide .(90)^(234) Th shows two successive beta- dec...

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  18. The half life of radioactive isotope is 3 hour. If the initial mass of...

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  19. Consider the following nuclear reactions: ""(92)""^(238)Mto.""(y)""^...

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  20. A radioactive element gets spilled over the floor of a room. Its half ...

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