Tritium is an isotope of hydrogen whose nucleus Triton contains 2 neutrons and 1 proton. Free neutrons decay into `p+bare+barv`. If one of the neutrons in Triton decays, it would transform into `He^(3)` nucleus. This does not happen. This is becauseA. Triton energy is less than that of a `He^(3)` nucleusB. the electron created in the beta decay process can not remain in the nucleusC. both the neutrons in triton have to decay simultaneously resulting in a nucleus with 3 protons, which is not a `He^(3)` nucleusD. because free neutrons decay due to external perturbations which is absent in a triton nucleus

Tritium is an isotope of hydrogen whose nucleus Triton contains 2 neut

1.	Tritium is an isotope of hydrogen whose nucleus Triton contains 2 neutrons and 1 proton. Free neutrons decay into `p+bare+barv`. If one of the neutrons in Triton decays, it would transform into `He^(3)` nucleus. This does not happen. This is becauseA. Triton energy is less than that of a `He^(3)` nucleusB. the electron created in the beta decay process can not remain in the nucleusC. both the neutrons in triton have to decay simultaneously resulting in a nucleus with 3 protons, which is not a `He^(3)` nucleusD. because free neutrons decay due to external perturbations which is absent in a triton nucleus
Answer» Correct Answer - A Tritium `to ._(1)H^(3)`. The nucleus contains 1 proton and 2 neutrons. If one neutrons decays `ntop+e^(-)+barv`, the nucleus may have 2 protons and one neutron, i.e., tritium will transform into `._(2)He^(3)` (with 2 protons and one neutron). But this does not happen because triton energy is less than that of `._(2)He^(3)` nucleus , i.e., transformation is not allowed energetically. Choice (a) is correct.

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The radioactive nuclei are unstable and emit alpha `(._(2)He^(4))` , beta `(._(-1)e^(0))` and gamma `(._(0)gamma^(0))` radiations to acheive states of greater stability. Rutherford and Soddy suggested the following rules governing the radioactive decay, (i) The algebric sum of charges (atomic numbers) before and after disintegration must be the same. (ii) The sum of mass numbers before and after disintegration must also be the same. In beta decayA. A remains unaffected, Z increases by 1.B. A is unaffected, Z decreases by 1C. A increases by 1, Z is unaffactedD. A decreases by 1, Z is unaffected.
The radioactive nuclei are unstable and emit alpha `(._(2)He^(4))` , beta `(._(-1)e^(0))` and gamma `(._(0)gamma^(0))` radiations to acheive states of greater stability. Rutherford and Soddy suggested the following rules governing the radioactive decay, (i) The algebric sum of charges (atomic numbers) before and after disintegration must be the same. (ii) The sum of mass numbers before and after disintegration must also be the same. In alpha decayA. mass number A decrease by 4 and atomic number Z increases by 2.B. A decreases by 4 and Z decreases by 2C. A increases by 4 and Z decreases by 2D. A increases by 4 and Z increases by 2.
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