1) What is the symbol and atomic number of Oganesson? a) The symbol is Og and the atomic number is 118. b) The symbol isOH and the atomic number is 118. c) The symbol is OG and the atomic number is 118. d) The symbol is Og and the atomic number is 112. 2) Which of the following is a common use of Argon (Ar)? a) Reacting with other gases to form compounds. b) Filling light bulbs to protect the filament. c) Producing oxygen for breathing. d) Cleaning metals chemically. 3) What is a disadvantage of Krypton (Kr)? a) It reacts with other gases. b) It is very rare and expensive. c) It burns easily. d) It pollutes the air. 4) It is considered the second lightest element in the universe after hydrogen? a) He b) Ne c) Xe d) Kr 5) What is radon (Rn) primarily known for? a) Being a safe and stable gas b) Being a radioactive gas that may cause cancer c) Being widely used in everyday applications d) Fuel for combustion engines 6) Atomic number of neon (Ne)? a) 8 b) 12 c) 10 d) 2 7) What are the downsides of Oganesson? a) Extreme instability b) Widely used in medical industries c) Stable and non-radioactive d) Naturally abundant 8) Why is Argon considered safe to use? a) It has a pleasant smell. b) It doesn’t displace oxygen in spaces. c) It is non-reactive with other substances. d) It creates bright light. 9) Why is xenon (Xe) considered expensive? a) It is highly toxic b) It is present in large quantities in the atmosphere c) It is rare and scarce d) It is less toxic 10) Used in magnetic resonance imaging (MRI)? a) Rn b) Og c) He d) Ar 11) What is one of the primary uses of xenon (Xe)? a) Radiation therapy b) High-efficiency lamps such as car headlights c) Fuel for combustion engines d) Being a safe and stable gas 12) How long does Oganesson last? a) A few milliseconds b) Several years c) Hundreds of days d) A few minutes

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