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Question Number 137429 by physicstutes last updated on 02/Apr/21

$$\mathrm{A}\mathrm{nuclide}{}_{81}^{210}X\mathrm{decays}\mathrm{to}\mathrm{another}\mathrm{nuclide}{}_{80}^{A}Y\mathrm{in}$$$$\mathrm{four}\mathrm{successive}\mathrm{radioactive}\mathrm{decays}.\mathrm{Each}\mathrm{decay}$$$$\mathrm{involves}\mathrm{the}\mathrm{emmision}\mathrm{of}\mathrm{either}\mathrm{an}\mathrm{alpha}\mathrm{particle}$$$$\mathrm{or}\mathrm{a}\mathrm{beta}\mathrm{particle}.\mathrm{The}\mathrm{value}\mathrm{of}A\mathrm{is}:$$$$\mathrm{A}.120\mathrm{B}.206$$$$\mathrm{C}.208\mathrm{D}.212$$

Commented by Dwaipayan Shikari last updated on 02/Apr/21

$${\underset{81}{X}}^{210}\stackrel{-\alpha }{\to }{H}_{79}^{206}$$$$H_{79}^{206}\stackrel{-{\beta }_0}{\to }{Y}_{80}^{206}A=206$$

Commented by physicstutes last updated on 02/Apr/21

$$\mathrm{sir}\mathrm{does}\mathrm{this}\mathrm{two}\mathrm{decay}\mathrm{not}\mathrm{sum}\mathrm{up}$$$$\mathrm{to}\mathrm{two}.\mathrm{its}\mathrm{four}\mathrm{they}\mathrm{asked}\mathrm{for}.$$

Commented by Dwaipayan Shikari last updated on 02/Apr/21

$$Isthereany\gamma decaysir?$$

Commented by physicstutes last updated on 02/Apr/21

$$\mathrm{no}\mathrm{just}\mathrm{alpha}\mathrm{and}\mathrm{beta}$$

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