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Which has magic number of neutrons?...

Which has magic number of neutrons?

A

`._(13)^(27) Al`

B

`._(83)^(209)Bi`

C

`._(92)^(238) U`

D

`._(26)^(56)Fe`

Text Solution

Verified by Experts

The correct Answer is:
`(b)`
Magnic number are `2,8,20,28,50` or `82` protons in nucleus or `2,8,20,28,50,82,126` neutrons in nulceus.These numbers imparts stablitly to nuclieous.
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P BAHADUR-RADIO ACTIVITY-Exercies 3A
  1. The number of millimoles of .(6)^(14)C equivalent to one millicuires ...

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  2. Antineutrion can vbe deteced during the emission of:

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  3. Which has magic number of neutrons?

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  4. Nuclides having some atomic number and same mass number but different ...

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  5. Neutrions was predicted to:

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  6. Half-life-speed of lead is:

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  7. What is the value of n for the present element of (4n + 3) series?

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  8. .(84)^(210)Po rarr (82)^(206) Pb + .(2)^(4)He in this reaciton predict...

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  9. .(90)Th a member of III group on losing alpha- particles forms a new ...

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  10. Isodiaphers are atoms having:

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  11. If two light nuclie are fused together in nuclear reaction, the aver...

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  12. .(92)^(235)U belongs to IIIB group of the periodic table, It loses one...

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  13. A small subatojmic particle was passed through large watger tank conat...

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  14. Radioacity of naptunium stops, when it is converted to:

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  15. Least branching is found in which of the following radioactive series...

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  16. Conservation of energy into mass occurs in:

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  17. The isotope used to find the age of series:

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  18. In the carbon cycle form which hot starts obain their energy, the .(6...

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  19. The t(1//2) for .^(14)C in (i) .^(14)CO(2), (ii) .^(14)C(6)H(12)O(6), ...

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  20. The radioactivity of a sample is R(1) at a time T(1) and R(2) at a ti...

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