Cesium (Alkali Metals) trivia
Cesium (Alkali Metals) Mini Quiz
Test your knowledge with these top questions!
Question 1
What unusual behavior can cesium show when gently warmed?
Cesium melts at about 28.5°C, low enough for the metal to liquefy in a warm room.
Question 2
What happens when cesium contacts water?
The reaction produces cesium hydroxide and hydrogen, and the released heat can ignite the hydrogen.
Question 3
Why does cesium-133 define the SI second?
The SI second equals 9,192,631,770 periods of radiation from cesium-133's ground-state hyperfine transition.
Question 4
What color does freshly exposed cesium metal appear?
Cesium's unusual golden tint fades quickly as the reactive metal tarnishes in air.