Suppose a ^226_88Ra nucleus at rest and in ground state undergoes α-decay to a ^222_86Rn nucleus in its excited state. The kinetic energy of the emitted α particle is found to be 4.44 Mev.^222_86Rn nucleus then goes to its ground state by \gamma-decay.The energy of the emitted γ photon is ____ keV. [Given: atomic mass of ^226_88Ra=226.005 \u atomic mass of ^{222}_{86}Rn=222.000{u} atomic mass of α particle =4.000{u},1{u}=931{MeV}{/{}c}^{2},c is speed of the light] [JEE Adv 2019 P2]

Atoms and Nuclei

Section: Physics

Question : 14 of 51

Marks: +1, -0

Suppose a 88226Ra nucleus at rest and in ground state undergoes α-decay to a 86222Rn nucleus in its excited state. The kinetic energy of the emitted α particle is found to be 4.44 Mev.86222Rn nucleus then goes to its ground state by γ−decay.The energy of the emitted γ photon is ____ keV.
[Given: atomic mass of 88226Ra=226.005‌u atomic mass of ‌‌86222Rn=222.000u
atomic mass of α particle =4.000u,1u=931MeV/‌c2,c is speed of the light]

[JEE Adv 2019 P2]

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