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Ch.5 Nuclear Chemistry
Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 14th Edition
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Timberlake 14th EditionCh.5 Nuclear Chemistry문제 19d
5장, 문제 19d

Complete each of the following nuclear equations and describe the type of radiation:
d. ? → 23490Th + 42He

검증된 단계별 안내
1
Step 1: Understand the problem. The given nuclear equation involves a missing reactant that undergoes a nuclear reaction to produce thorium-234 (²³⁴₉₀Th) and a helium nucleus (⁴₂He). The helium nucleus is also known as an alpha particle, indicating that this is an alpha decay process.
Step 2: Recall the law of conservation of mass and atomic numbers. In a nuclear reaction, the sum of the mass numbers (superscripts) and the sum of the atomic numbers (subscripts) must be equal on both sides of the equation.
Step 3: Write the equation with placeholders for the missing reactant. Let the missing reactant be represented as ²³⁸₉₂X, where ²³⁸ is the mass number and ₉₂ is the atomic number. The equation becomes: ²³⁸₉₂X → ²³⁴₉₀Th + ⁴₂He.
Step 4: Verify the conservation of mass numbers. The mass number of the reactant (²³⁸) must equal the sum of the mass numbers of the products (²³⁴ + ⁴). This confirms that the mass number of the missing reactant is ²³⁸.
Step 5: Verify the conservation of atomic numbers. The atomic number of the reactant (₉₂) must equal the sum of the atomic numbers of the products (₉₀ + ₂). This confirms that the atomic number of the missing reactant is ₉₂, identifying it as uranium-238 (²³⁸₉₂U). The type of radiation is alpha radiation.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Nuclear Decay

Nuclear decay is the process by which an unstable atomic nucleus loses energy by emitting radiation. This can occur in various forms, including alpha, beta, and gamma decay. In the context of the given equation, the decay process involves the transformation of one element into another, resulting in the emission of particles.
추천 영상:
가이드 코스
03:53
Alpha Decay

Alpha Particle

An alpha particle is a type of radiation consisting of two protons and two neutrons, essentially a helium nucleus. It is emitted during alpha decay, a common form of nuclear decay for heavy elements. The presence of an alpha particle in the equation indicates that the original nucleus is losing mass and charge, transforming into a new element.
추천 영상:
가이드 코스
01:22
Alpha Decay Reaction Example

Balancing Nuclear Equations

Balancing nuclear equations involves ensuring that the total number of protons and neutrons is conserved during a nuclear reaction. This means that the sum of the atomic numbers and mass numbers on both sides of the equation must be equal. In the provided equation, identifying the missing particle requires applying this principle to maintain balance.
추천 영상:
가이드 코스
01:32
Balancing Chemical Equations (Simplified) Concept 1
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