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Assertion (A) : In radioactive disintegr...

Assertion `(A) :` In radioactive disintegrations, `._(2)He^(4)` nuclei can come out of the nucleus but lighter `._(2)H^(3)` cannot.
Reason `(R) :` The binding energy of `._(2)H^(3)` is more than that of `._(2)H^(4)`.

A

If both (A) and (R ) are correct and (R ) is the correct explanation for (A).

B

If both (A) and (R ) are correct but (R ) is not the correct explanation for (A )

C

If both (A) and (R ) are incorrect.

D

If both (A) and (R ) are incorrect.

Text Solution

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The correct Answer is:
C
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Assertion (A) : In radioactive disintegrations, ._(2)H^(4) nuclei can come out of the nucleus but lighter ._(2)H^(3) cannot. Reason (R) : The binding energy of ._(2)H^(3) is more than that of ._(2)H^(4) .

When two dentrons (._(1)H^(2)) fuse to from a helium nucleus ._(2)He^(4), 23.6 MeV energy is released. Find the binding energy of helium if it is 1.1 MeV for each nucleon of deutrim.

Assertion : Bond angle in H_(2)O is less than that in H_(2)S . Reason : Electronegativity of O is more than that of S.

Assertion (A): The product is: Reason (R ): p-NO_(2)-C_(6)H_(4)O^(-) is a stronger nucleophile than PhO^(-) .

Assertion: Lower value of binding energy per nucleon indicates greater stability. Reason : Binding energy per nucleon of ._(3)Li^(7) is greater than that of ._(2)He^(4) . Hence ._(3)Li^(7) is less stable than ._(2)He^(4) .

OP TANDON-RADIOACTIVITY AND NUCLEAR TRANSFORMATION -Assettion Reason
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