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When radioactive uranium decays to produce thorium, it also emits a particle. As seen in the balanced nuclear equation, this particle can BEST be described as

Alpha particle or helium nuclei.

Explanation:

Alpha particle:

Alpha particle is emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

Properties of alpha radiation:

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

Bak knk şimdi cevap : B)

Nedenler :.

En natrutiens are forvet faisbslly çünkü anan .

Burdan tüm Türkiyenin ta kurban bayramı hayırlı olsun.

İyi akşamlar sizde akşam dimi laa