Question

Consider the nuclear equation below.

Answer 1

²³⁵₉₂U → ²³¹₉₀Th + ⁴₂He

D) ²³¹₉₀Th 

Answer 2

Answer;

D) ²³¹₉₀Th

Explanation;

²³⁵₉₂U → ²³¹₉₀Th + ⁴₂He

This is known as alpha decay

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or 'decays' into a different atomic nucleus, with a mass number that is reduced by four and an atomic number that is reduced by two.