From a radioactive substance x numbers o...

From a radioactive substance x numbers of `alpha`-particles any y numbers of `beta`-particles are emitted. As a result atomic number decreases by n and mass number by m. Then, match the following two columns.

Text Solution

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The correct Answer is:

`(Atoq; Btos; Cto p; Dtor)`

By the emission of an `alpha`-particle , atomic number decreases by 2nd mass number by 4. but by the emission of a `beta `-particle atomic number increase increase by 1 while mass number remains unchanged .

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The number of beta- particles emitted in the following nuclear reaction is

Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

Assertion is correct but Reason is incorrect

Assertion is incorrect but Reason is correct

A nucleus ._n^ m X emits one alpha- particle and two beta- particles. The resulting nucleus is

`.^(m-6)._(n)Z`

`.^(m-4)._(n)Z`

`.l_(n-2)^(m-4)Y`

`._(n-4)^(m-6)Z`

Assertion : After emission of one alpha -particle and two beta -particles, atomic number remains unchanged. Reason : Mass number changes by four.

(a) If both Assertion and Reason are true and Reason is correct explanation of the Assertion.

(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

(d) If Assertion is false but the Reason is true.