Cesium: Overview

Cesium is a chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28.5°C (83.3°F), which makes it one of only five elemental metals that are liquid at or near room temperature.

Physical and Chemical Properties

• Atomic Number: 55
• Atomic Mass: 132.91
• Phase at Room Temperature: Solid
• Melting Point: 28.5°C (83.3°F)
• Boiling Point: 671°C (1,240°F)
• Density: 1.93 g/cm³
• Electron Configuration: [Xe] 6s¹
• Common Compounds: Cesium chloride (CsCl), Cesium hydroxide (CsOH)

Occurrence and Production

Cesium is not found as a free element in nature due to its high reactivity. It is mainly obtained from the mineral pollucite, which contains cesium and is found in various locations around the world. Cesium is also produced as a byproduct of nuclear fission in nuclear reactors.

Uses

Cesium has several important applications, including its use in atomic clocks, as a catalyst in organic synthesis, and in the drilling industry for oil and gas exploration. It is also utilized in the production of specialty glasses and in the field of infrared spectroscopy.

Health and Safety

Cesium and its compounds should be handled with care due to their high reactivity and potential toxicity. Exposure to cesium can lead to various health effects, including skin irritation and damage to internal organs. Proper safety measures should be followed when working with cesium and its compounds.

Study Guide

When studying cesium, it is important to focus on its physical and chemical properties, its occurrence and production methods, as well as its diverse range of uses in various industries. Understanding the health and safety considerations associated with cesium is also crucial for a comprehensive understanding of this element.

Additionally, it can be beneficial to explore the historical significance of cesium, including its discovery and the development of its applications over time. This can provide valuable context for understanding its role in modern science and industry.

Finally, practicing sample questions and problems related to cesium's properties and its applications can help reinforce your understanding of the topic and prepare you for assessments or exams.

[Cesium] Related Worksheets and Study Guides:

• Elements and the periodic tableScience • Seventh Grade
• Elements, mixtures and compoundsScience • Fifth Grade