Assertion :Nucleus does not contain free electrons, yet it emit beta-particles. Reason: At high $n / p$ ratio, one neutron supposed to give $1$ proton and $1 e^{-} (β)$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
It is assumed that beta-decay is the conversion of a neutron into proton and electron. In radioactive emissions of beta particles (energetic electrons), a bound neutron in the nucleus changes into a proton inside the nucleus, with the emission of an electron and an anti-neutrino.

Hence, at high n/p ratio, one neutron is supposed to give 1 proton and 1 electron(β).

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(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
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(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :Nucleus does not contain free electrons, yet it emit beta-particles. Reason: At high n/p ratio, one neutron supposed to give 1 proton and 1e−(β).

Assertion :Nucleus does not contain free electrons, yet it emit beta-particles. Reason: At high $n / p$ ratio, one neutron supposed to give $1$ proton and $1 e^{-} (β)$ .