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A radioactive element X decays to give t...

A radioactive element `X` decays to give two inert gases`X` is

A

`._(92)^(238)U`

B

`._(88)^(226)Ra`

C

`._(90)^(232)Th`

D

`._(89)^(227)Ac`

Text Solution

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To solve the question, "A radioactive element `X` decays to give two inert gases. `X` is:", we can follow these steps: ### Step 1: Understand the Concept of Radioactive Decay Radioactive decay is a process by which an unstable atomic nucleus loses energy by emitting radiation. This process can result in the transformation of the element into a different element or isotope. **Hint:** Remember that radioactive decay can produce alpha particles, beta particles, or gamma rays. ### Step 2: Identify the Inert Gases Inert gases, also known as noble gases, are elements in Group 18 of the periodic table. The common inert gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). **Hint:** Recall the properties of noble gases, such as their complete valence electron shells, which make them stable and unreactive. ### Step 3: Analyze the Options The question provides multiple-choice options. To determine which radioactive element decays to produce two inert gases, we need to consider known decay processes of radioactive elements. **Hint:** Focus on elements that are known to produce inert gases during their decay processes. ### Step 4: Review Known Decay Processes Radon (Rn) is a radioactive noble gas that can decay to produce other inert gases. For example, radon-222 decays to produce helium-4 (an alpha particle) and polonium-218, which can further decay to produce other elements. However, in the context of the question, we are looking for a direct decay to two inert gases. **Hint:** Look for specific decay chains involving radon or other radioactive elements that yield helium and another noble gas. ### Step 5: Conclusion Based on the known decay processes, radon-226 decays to produce helium (He) and radon (Rn) itself, making it the only option that fits the criteria of producing two inert gases. Thus, the correct answer is: **X is Radon (Rn).** ### Final Answer X is Radon (Rn).
To solve the question, "A radioactive element `X` decays to give two inert gases. `X` is:", we can follow these steps: ### Step 1: Understand the Concept of Radioactive Decay Radioactive decay is a process by which an unstable atomic nucleus loses energy by emitting radiation. This process can result in the transformation of the element into a different element or isotope. **Hint:** Remember that radioactive decay can produce alpha particles, beta particles, or gamma rays. ### Step 2: Identify the Inert Gases ...
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