Which of the following xenon oxides has not been identified? A) XeOS B) Xe₂O₃ C) XeO₄

Question

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It appears there is a formatting issue with the chemical formulas provided in the question. The "S1U1B1" sequences seem to be artifacts from a text encoding error. However, I will attempt to interpret the question as best as I can.
The question seems to be asking which of the following xenon oxides has not been identified:
a. XeO
b. XeO3
c. XeO4
Among these options:
a. XeO (xenon monoxide) has been studied under extreme conditions, but it is not a stable compound under normal conditions and is not well-characterized.
b. XeO3 (xenon trioxide) is a well-known compound that is stable at room temperature and has been extensively studied.
c. XeO4 (xenon tetroxide) is also a known compound, although it is highly unstable and can explode upon contact with organic materials.
Based on the information above, the xenon oxide that has not been identified as a stable and well-characterized compound under normal conditions is XeO (xenon monoxide). Therefore, the correct answer would be:
A: XeO (xenon monoxide) has not been identified as a stable compound under normal conditions.

Which of the Following Xenon Oxides Has Not Been Identified