For clue 5 on your mission, you are asked to visit the LARGEST of the Alkali Metals. Identify the name of this element and give its the group number, period number, symbol and atomic mass for the most rare element in this family. Tell me what its "magical power" is that makes it very rare. (6 points total)

Answer 1

The largest of the Alkali Metals is Cesium. Here are the details you requested:

• Group Number: 1
• Period Number: 6
• Symbol: Cs
• Atomic Mass: Approximately 132.91 u

"Magical Power": Cesium is considered rare in its natural occurrence because it is highly reactive and not found in its elemental form in nature. Its "magical power" could refer to its use in atomic clocks, where it helps define the second based on the vibrations of cesium atoms. This precision in timekeeping makes cesium essential for global positioning systems (GPS) and various scientific applications, highlighting its uniqueness and rarity in practical use.