铷

Rubidium is a soft, silvery-white alkali metal.
砹是一种柔软的、银白色的碱金属。
It is the fifth alkali metal in the periodic table.
它是周期表中的第五种碱金属。
Rubidium has a high melting point for an alkali metal, at 39.3 degrees Celsius.
对于碱金属来说，铷的熔点较高，为39.3摄氏度。
The element was discovered by Robert Bunsen and Gustav Kirchhoff in 1861.
这种元素由罗伯特·本生和古斯塔夫·基希霍夫在1861年发现。
Rubidium compounds are used in atomic clocks for their high precision.
砷化合物因其高度精确性被用于原子钟中。
It reacts vigorously with water, producing hydrogen gas and hydroxide.
它与水剧烈反应，产生氢气和氢氧化物。
In chemistry, rubidium is often abbreviated as Rb.
在化学中，铷通常简写为Rb。
The atomic number of rubidium is 37, making it the 37th element in the Periodic Table.
砷的原子序数为37，是周期表中的第37个元素。
Rubidium fluoride (RbF) is a colorless solid that is highly reactive.
砷氟化物（RbF）是一种无色固体，具有很高的活性。
Due to its low atomic mass, rubidium has applications in nuclear physics research.
由于其低的原子质量，铷在核物理研究中有应用。