6 Radioactivity

Nucleus X emits an alpha particle and forms nucleus Y.

{}^{A}_{Z}\mathrm{X}\rightarrow{}^{223}_{88}\mathrm{Y}+{}^{4}_{2}\mathrm{He}

What are the values of $A\,$ and $Z\,$ for nucleus X?

[1]

$A = 219$ and $Z = 86$

$A = 227$ and $Z = 86$

$A = 227$ and $Z = 90$

$A = 223$ and $Z = 90$

Nucleus X emits an alpha particle and forms nucleus Y.

{}^{A}_{Z}\mathrm{X}\rightarrow{}^{223}_{88}\mathrm{Y}+{}^{4}_{2}\mathrm{He}

What are the values of $A\,$ and $Z\,$ for nucleus X?

[1]

$A = 219$ and $Z = 86$

$A = 227$ and $Z = 86$

$A = 227$ and $Z = 90$

$A = 223$ and $Z = 90$

6 Radioactivity Questions