Respuesta :

Answer:

231-91Pa>4-2a+227-89Ac

Explanation:

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The equation for the alpha decay of  [tex]^{231} _{91}Pa[/tex] is written as [tex]^{231}_{91}Pa\ ---> \ ^4_2\alpha \ + \ ^{227} _{89}Ac[/tex].

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle.

The emission of this alpha particle reduces the mass number of the original atom by 4 and the atomic number by 2.

The alpha decay equation is written as;

[tex]^a_zX\ ---> \ ^4_2\alpha \ + \ ^{a-4} _{z-2}Y[/tex]

When the given atom ([tex]^{231} _{91}Pa[/tex]) under goes alpha decay, the resulting element is written using the following equation;

[tex]^{231}_{91}Pa\ ---> \ ^4_2\alpha \ + \ ^{227} _{89}Ac[/tex]

Thus, the equation for the alpha decay of  [tex]^{231} _{91}Pa[/tex] is written as [tex]^{231}_{91}Pa\ ---> \ ^4_2\alpha \ + \ ^{227} _{89}Ac[/tex].

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