Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 36m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

21. Nuclear Chemistry

Beta Decay

General Chemistry

21. Nuclear Chemistry

Beta Decay

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Multiple Choice

Which of the following is the correct nuclear equation for the beta decay of Pa-234?

Pa-234 → Pa-233 + n

Pa-234 → U-234 + β⁻

Pa-234 → Np-234 + β⁺

Pa-234 → Th-230 + α

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Verified step by step guidance

Identify the type of decay: Beta decay involves the transformation of a neutron into a proton, emitting a beta particle (β⁻) and an antineutrino. In beta decay, the atomic number increases by 1, while the mass number remains unchanged.

Analyze the given options: We need to find the option where the atomic number of the product increases by 1 compared to the parent nucleus, Pa-234.

Examine the atomic numbers: Protactinium (Pa) has an atomic number of 91. In beta decay, the atomic number should increase to 92, which corresponds to Uranium (U).

Check the mass numbers: The mass number should remain the same at 234, as beta decay does not change the mass number.

Match the correct equation: The correct nuclear equation for the beta decay of Pa-234 is Pa-234 → U-234 + β⁻, where the atomic number increases from 91 to 92, and the mass number remains 234.