Which statement identifies a fission product gas?

Which statement identifies a fission product gas?

• A. Kr-88
• B. I-131
• C. Cs-137
• D. Mn-54

Answer: (A)

Fission product gases are the gaseous fragments that come directly from fission and are present as gases at normal conditions. Krypton-88 fits this because krypton is a noble gas, so a fission fragment that becomes krypton will exist as a gas. The other isotopes listed are solids (cesium-137 and manganese-54) or a solid halogen like iodine-131 at room temperature, so they aren’t classified as a fission product gas.

Fission product gases are the gaseous fragments that come directly from fission and are present as gases at normal conditions. Krypton-88 fits this because krypton is a noble gas, so a fission fragment that becomes krypton will exist as a gas. The other isotopes listed are solids (cesium-137 and manganese-54) or a solid halogen like iodine-131 at room temperature, so they aren’t classified as a fission product gas.