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.(84)^(210)Po rarr (82)^(206) Pb + .(2)^...

`._(84)^(210)Po rarr _(82)^(206) Pb + ._(2)^(4)He` in this reaciton predict the positon of group of `Po` when lead is the the `IVB` group:

A

`IIA`

B

`IVB`

C

`VIB`

D

`VIA`

Text Solution

Verified by Experts

The correct Answer is:
`(c)`
An element formed by losing one `alpha-` particles occupies two positon left to parent element. `Pb` in `IVB` thus `Po` thus `Po` sho db ein `ViB`.
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P BAHADUR-RADIO ACTIVITY-Exercies 3A
  1. Half-life-speed of lead is:

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

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  3. .(84)^(210)Po rarr (82)^(206) Pb + .(2)^(4)He in this reaciton predict...

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

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  5. Isodiaphers are atoms having:

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

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  7. .(92)^(235)U belongs to IIIB group of the periodic table, It loses one...

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

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

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

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  11. Conservation of energy into mass occurs in:

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

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

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

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

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  16. Which nuclear raction is not correct?

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  17. The parent nucleus of (4n + 3) seires is:

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  18. If 5g pf a radioactive substanc ehas t(1//2) = 12hr, 20g of the same s...

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  19. A radioactive istope having a half-line of 3 day was received after 12...

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  20. Radioactive material is deacign with t(1//2) = 30 days on being, separ...

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