Why cesium is the most reactive metal

As Einstein realised at such speeds strange things begin to happen. The electrons become a little closer to the nucleus than expected and they also become slightly harder to remove than expected.

Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Which is the most reactive metal: Caesium or Francium? Asked 1 year, 7 months ago. Active 1 year, 7 months ago. Viewed 2k times. Improve this question. Aryan Aryan 57 3 3 bronze badges.

If you want to you can explain in more detail. On the Pauling Scale, the element has a value of 0. Cesium is its only stable isotope, and is mined from pollucite, while other isotopes, such as Cesium, which is a fission product, are derived from waste produced by nuclear reactors.

Cesium has numerous applications, one of which is its use in atomic clocks. The first accurate cesium clock was built in by British physicist Louis Essen. Since then cesium clocks have improved significantly, and are now considered the most accurate form of time keeping, with an error of just 2 or 3 parts in 10 14 , which is equivalent to 2 nanoseconds per day or 1 second every 1.

Furthermore, the latest cesium clocks are even more accurate, with an error of 1 part in 10 15 , which is equivalent to 1 second every 20 million years. Cesium clocks are now used to regulate the timing of the internet and mobile phone networks.

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