Mass number 238 236 234 232 230 228 226 224 222 220 218 216 214 212 210 208 206 204 Part A Po Pb Bi Po Pb Bi Po Pb alpha emission Rn 2 Ra beta emission U Th Pa U Th 81 82 83 84 85 86 87 88 89 90 91 92 93 Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Atomic number Nuclear decay chain for uranium-238. The decay continues until the stable nucleus 206 Pb is formed. Write the nuclear equation for the step shown for the first decay of Th. Express your answer as a nuclear equation including mass numbers and atomic numbers.

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**Week 2 Assignment: Nuclear Chemistry and Chemical Equilibrium**

**Nuclear Decay Chain Diagram Explanation:**

The diagram shown is a nuclear decay chain for uranium-238. It illustrates the decay process of uranium-238 (U) as it transforms through a series of elements by releasing alpha and beta particles until it reaches a stable state. The decay process is depicted in a series of steps, with each element labeled by its atomic number and mass number. The chain continues until lead-206 (\(^{206}\text{Pb}\)), a stable nucleus, is formed.

The graph includes:

- **Mass Number (y-axis):** This represents the total number of protons and neutrons in the nucleus.
- **Atomic Number (x-axis):** This represents the number of protons in the nucleus, which determines the element.

The decay process is illustrated by arrows indicating alpha and beta emissions.

**Part A:**

**Task:** Write the nuclear equation for the step shown for the first decay of thorium (Th).

**Instructions:** Express your answer as a nuclear equation including mass numbers and atomic numbers.

- Input box for writing the nuclear equation
- Toolbar with symbols for entering Greek letters, subscripts, and superscripts

_Feedback:_

- “A chemical reaction does not occur for this question.”
- “That's not quite right. Please check your formatting and try again. No credit lost. Try again.”

**Options for Submission:**

- Submit
- Previous Answers
- Request Answer
Transcribed Image Text:**Week 2 Assignment: Nuclear Chemistry and Chemical Equilibrium** **Nuclear Decay Chain Diagram Explanation:** The diagram shown is a nuclear decay chain for uranium-238. It illustrates the decay process of uranium-238 (U) as it transforms through a series of elements by releasing alpha and beta particles until it reaches a stable state. The decay process is depicted in a series of steps, with each element labeled by its atomic number and mass number. The chain continues until lead-206 (\(^{206}\text{Pb}\)), a stable nucleus, is formed. The graph includes: - **Mass Number (y-axis):** This represents the total number of protons and neutrons in the nucleus. - **Atomic Number (x-axis):** This represents the number of protons in the nucleus, which determines the element. The decay process is illustrated by arrows indicating alpha and beta emissions. **Part A:** **Task:** Write the nuclear equation for the step shown for the first decay of thorium (Th). **Instructions:** Express your answer as a nuclear equation including mass numbers and atomic numbers. - Input box for writing the nuclear equation - Toolbar with symbols for entering Greek letters, subscripts, and superscripts _Feedback:_ - “A chemical reaction does not occur for this question.” - “That's not quite right. Please check your formatting and try again. No credit lost. Try again.” **Options for Submission:** - Submit - Previous Answers - Request Answer
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