231k views
2 votes
What nucleus emits an alpha particle and forms Th-234?

User Heroxav
by
3.3k points

1 Answer

3 votes

Answer:

Uranium-238

Explanations:

The process by which an atomic nucleus looses energy by radiation is known as radioactivity.

An alpha particle, have an atomic number of 2 and a mass number of 4 as shown;


_2^4He

When this is combined with Th-234, it forms Uranium-238. This shows that the uranium nucleus emits alpha particle to form Th-234 according to the chemical equation below;


_(92)^(238)U\rightarrow_2^4He+_(90)^(234)Th