Which of the Following Reactions Is an Example of Beta ${ }_{42}^{99} \mathrm{Mo} \rightarrow{ }_{43}^{99} \mathrm{Tc}+{ }_{-1}^{0} e$

question 34

Multiple Choice

Which of the following reactions is an example of beta particle emission?

• A) \({ }_{42}^{99} \mathrm{Mo} \rightarrow{ }_{43}^{99} \mathrm{Tc}+{ }_{-1}^{0} e\)
• B) \({ }_{19}^{40} \mathrm{~K}+{ }_{-1}^{0} e \rightarrow{ }_{18}^{40} \mathrm{Ar}\)
• C) \({ }_{19}^{40} \mathrm{~K} \rightarrow{ }_{18}^{40} \mathrm{Ar}+{ }_{1}^{0} e\)
• D) \({ }_{92}^{238} \mathrm{U} \rightarrow{ }_{90}^{234} \mathrm{Th}+{ }_{2}^{4} \mathrm{He}\)
• E) \({ }_{90}^{232} \mathrm{Th} \rightarrow{ }_{88}^{228} \mathrm{Ra}+{ }_{2}^{4} \mathrm{He}\)

---

Definitions:

Amino-Type

Relates to compounds or functional groups that contain an amino group, characterized by a nitrogen atom attached to hydrogen atoms or organic substituents.

Molecular Weight

The sum of the atomic weights of all atoms in a molecule, used in calculating concentrations and reactions in chemistry.

Ethylene Glycol

A toxic organic compound commonly used as an automotive antifreeze and a precursor to polymers.

1,2-Ethanediol

A chemical compound commonly known as ethylene glycol, used as an antifreeze and precursor to polymers.