Caesium (IUPAC spelling; [9] also spelled cesium in American English) is a chemical element; it has symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F; 301.6 K), which makes it one of only five elemental metals that are liquid at or near room temperature.

2025年1月31日 · cesium (Cs), chemical element of Group 1 (also called Group Ia) of the periodic table, the alkali metal group, and the first element to be discovered spectroscopically (1860), by German scientists Robert Bunsen and Gustav Kirchhoff, who named it for the unique blue lines of its spectrum (Latin caesius, “sky-blue”).

2022年5月24日 · Cesium or caesium is a shiny, pale gold metal with element symbol Cs and atomic number 55. Cesium is the softest metal that is a solid at room temperature. It becomes a liquid element at 28.5 °C or 83.3 °F. Like gallium, it is a metal you can melt in the palm of your hand (but please don’t).

Cesium, represented by the atomic number 55 and symbol "Cs," is an alkali metal that is soft, silvery-gold in color, and highly reactive. The element is known for its applications in atomic clocks, medical treatments, and a variety of industrial processes.

2019年7月25日 · Cesium or caesium is a metal with the element symbol Cs and atomic number 55. This chemical element is distinctive for several reasons. Here is a collection of cesium element facts and atomic data:

2024年9月26日 · Cesium (pronounced SEE-zee-um) is a silvery-gold metal that’s soft and shiny. It’s part of a group of metals called the alkali metals , and it’s one of the most reactive metals in the world! Cesium reacts quickly when it touches water, which is …

Cesium is the most reaction metal on the periodic table that is stable. Cesium has atomic symbol Cs, and atomic number 55. It lies below the element rubidium and above francium in group 1 of the periodic table, the alkali metals. It is a soft, gold-colored metal.

Caesium is a soft alkali metal that is silvery-gold. It melts and liquefies at 83 degrees Fahrenheit and is one of only five metals that are liquid close to room temperature. Caesium is a metal that is most widely known for its use in atomic clocks.

Cesium is an extremely reactive metal and the most alkaline of the elements. It reacts explosively upon contact with water producing cesium hydroxide (CsOH), an extremely strong base that can rapidly corrode glass. Cesium is used in atomic clocks, which are incredibly accurate.

Cesium (pronounced as SEE-zee-em), sometimes spelled as caesium, is a highly reactive metal when exposed to air and water. Denoted by the chemical symbol Cs, it belongs to the family of alkali metals [1]. It has one naturally occurring isotope, Cs …