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.(86)^(226)Ra to .(Z)^(A)Rn+.(2)^(4)He ...

`._(86)^(226)Ra to ._(Z)^(A)Rn+._(2)^(4)He`
Radon is prepared by `alpha`-decay from radium, in above reaction A and Z are respectively

A

226, 86

B

222,90

C

222,86

D

230,90

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE-THE P-BLOCK ELEMENTS-Assignment Section-A)
  1. Which is incorrectly given according to order incicated?

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  2. Cl(2) on reaction with excess of NH(3) gives

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  3. Complete the following chemical reaction equations : (i) underset(("...

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  4. Cl(2)+underset((Excess))(F(2)) overset(573K)to(A) Shape of compound ...

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  5. The correct order of acidic strength is

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  6. The one with maximum oxidising power is

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  7. Total number of F-l-F bond angles which are 90^(@) present in lF(7) is

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  8. In general interhalogen compounds are more reactive than halogens, exc...

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  9. Cl(2) is used preparation of poisonous gases, one of them is mustard g...

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  10. Anamolous behaviour of fluorine in group 17 is due to

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  11. .(86)^(226)Ra to .(Z)^(A)Rn+.(2)^(4)He Radon is prepared by alpha-de...

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  12. Noble gases are mostly inert. Assign reasons.

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  13. underset((1:20))(Xe+Fe(2)) overset(573K,60-70" bar")to? The compound...

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  14. Noble gases used in diving apparatus and discharge tube is respectivel...

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  15. Which is mismatched regarding the shape?

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  16. Compound of which of the noble gases, are neither isolated nor identif...

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  17. Structure of XeO(2)F(2) is correctly represented by

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  18. Why has it been difficult to study the chemistry of radon?

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  19. The ease of liquefaction of noble gases decreases in the order

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  20. Noble gases are sparingly soluble in water due to

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