Question : Identify the last element from the fifth period.
Option 1: Helium
Option 2: Yttrium
Option 3: Rubidium
Option 4: Xenon
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Correct Answer: Xenon
Solution : The correct option is Xenon .
Xenon (Xe) is a chemical element found in Group 18 (also known as the noble gases) of the periodic table. It has an atomic number of 54 and is located in period 5. Xenon is a colourless, odourless and inert gas known for its low reactivity and is often used in various applications, including in lighting (xenon lamps) and as a component in some lasers.
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