Question 282: Atoms & Nuclei

Question

In a radioactive decay chain, the initial nucleus is $${}_{90}^{232}$$Th. At the end there are 6 $$\alpha $$-particles and 4 $$\beta $$-particles which are emitted. If the end nucleus is $${}_Z^A$$X, A and Z are given by :

Accepted Answer

$${}_{90}^{232}$$Th  $$\buildrel \, \over
 \longrightarrow $$  $${}_{78}^{208}$$Y   +   $${}_2^4$$He
$${}_{78}^{208}$$Y   $$\buildrel \, \over
 \longrightarrow $$  $${}_{82}^{208}$$ X   +  4$$\beta $$

Answer

A = 208; Z = 80

Answer

A = 208; Z = 82

Answer

A  = 200; Z = 81

Answer

A = 202; Z = 80

Atoms & Nuclei

In a radioactive decay chain, the initial nucleus is ${}_{90}^{232}Th. At the end there are 6 \alpha -particles and 4 \beta -particles which are emitted. If the end nucleus is {}_Z^A$X, A and Z are given by :

Choose the correct answer: