91影视

Nuclear chemistry is a branch of chemistry concerned with the 鈥渟tudy of changes鈥� in the nucleus of atoms. These nuclear alterations produce nuclear power and radioactivity, and the energy generated by nuclear reactions has a wide range of uses.

$伪$decay is a radioactive process in which an alpha particle is emitted from a nucleus. $尾$decay A radioactive process in which a beta particle is emitted from a nucleus.

In the naturally occurring thorium-232 decay series, the steps emit this sequence of particles:

First decay process reaction

$\left({}_{90}{}^{232}Th\right.emits伪emission):{}_{90}^{232}Th{鈫�}_2^4伪{+}_{88}^{228}Ra$

Second decay process reaction $\left({}_{88}{}^{228}Ra\right.emits{尾}^{-}emission):$

${}_{88}{}^{228}Ra{鈫�}_{-1}^0尾{+}_{89}^{228}Ac$

Third decay process reaction $\left({}_{89}{}^{228}Ac\right.emits{尾}^{-}emission):$

${}_{89}{}^{228}Ac{鈫�}_{-1}^0尾{+}_{90}^{228}Th$

Forth decay process reaction $\left({}_{90}{}^{228}Th\right.emits伪emission):$

${}_{90}{}^{228}Th{鈫�}_2^4伪{+}_{88}^{224}Ra$

Fifth decay process reaction ${(}_{88}^{224}Raemits伪emission):$

${}_{88}{}^{224}Ra{鈫�}_2^4伪{+}_{86}^{220}Rn$

Sixth decay process reaction$\left({}_{86}{}^{220}Rn\right.emits伪emission):$

${}_{86}{}^{220}Rn{鈫�}_2^4伪{+}_{84}^{216}P{o}_o$

Seventh decay process reaction$\left({}_{84}{}^{216}Po\right.emits伪emission):$

${}_{84}{}^{216}Po{鈫�}_2^4伪{+}_{82}^{212}Pb$

Eighth decay process reaction$\left({}_{82}{}^{212}Pb\right.emits{尾}^{-}emission):$

${}_{82}{}^{212}Pb{鈫�}_{-1}^0尾{+}_{83}^{212}Bi$

Ninth decay process reaction$\left({}_{83}{}^{212}Bi\right.emits{尾}^{-}emission):$

${}_{83}{}^{212}Bi{鈫�}_{-1}^0尾{+}_{84}^{212}{P}_o$

Tenth decay process reaction$\left({}_{84}{}^{212}Po\right.emits伪emission):$

${}_{84}{}^{212}Po{鈫�}_2^4伪{+}_{82}^{208}Pb$