abbr.rubidium 铷，running back （美国橄榄球）以带球跑动进攻为主要任务的后卫

Rubidium (Rb) is a soft, silvery alkali metal.
氢铷是一种柔软且银白色的碱金属。
The melting point of rubidium is 39.3 degrees Celsius.
氢铷的熔点为39.3摄氏度。
Rb reacts vigorously with water, releasing hydrogen gas.
氢铷与水剧烈反应，产生氢气。
In chemistry, Rb+ ions play a role in redox reactions.
在化学中，氢铷阳离子参与氧化还原反应。
Scientists use Rb atoms in atomic clocks for precise timekeeping.
科学家在原子钟中使用氢铷原子以实现精确计时。
Rb compounds are often used as coolants in nuclear reactors.
氢铷化合物常被用作核反应堆的冷却剂。
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·基尔霍夫于1861年发现。
Rb has a low electronegativity, making it a good reducing agent.
氢铷的电负性较低，使其成为良好的还原剂。
RbO2 is a rare compound that acts as an oxidizing agent.
氢铷过氧化物是一种罕见的化合物，作为氧化剂起作用。
The element's name comes from the Latin word "rubidius," meaning dark red or dull red.
这个元素的名字源于拉丁语"rubidius"，意为暗红色或暗淡的红色。