Ch.19 - Nuclear ChemistryWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Identify the product of radioactive decay and classify the given nuclear reactions accordingly (α decay, β decay, γ decay).23490Th → 23088Ra + ?23892U → 23893Np + ?24294Pu → 23892U + ?209F → 2010Ne + ?23793Np → 23793Np + ?

Solution: Identify the product of radioactive decay and classify the given nuclear reactions accordingly (α decay, β decay, γ decay).23490Th → 23088Ra + ?23892U → 23893Np + ?24294Pu → 23892U + ?209F → 2010Ne +

Problem

Identify the product of radioactive decay and classify the given nuclear reactions accordingly (α decay, β decay, γ decay).

23490Th → 23088Ra + ?

23892U → 23893Np + ?

24294Pu → 23892U + ?

209F → 2010Ne + ?

23793Np → 23793Np + ?


Solution

We have to identify the type of radioactive decay that is represented by the given equations and determine the missing product in each.

The spontaneous breakdown of a larger atomic nucleus to produce energy and smaller nucleus/nuclei is called radioactive decay.


Different types of radioactive decay are:


α-decay: The decaying nucleus produces a smaller nucleus and a helium nucleus (α-particle).


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β-decay: 𝛽-decay can be of two types.


𝛽- decay: It is also known as negatron emission. In this type of decay a neutron is converted into a proton while an electron is ejected from the nucleus.

  • Mass number remains unchanged in this process.
  • Atomic number increases by 1.


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𝛽+ decay: It is also known as positron emission. In this type of decay a proton is converted into a neutron while a positron is ejected from the nucleus.

  • Mass number remains unchanged in this process.
  • Atomic number decreases by 1.


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γ-decay: This only emits γ-rays which are high-energy electromagnetic radiation. The atomic number and mass number of the decaying nucleus remain unchanged.


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