# Question #6e2b4

Jul 5, 2015

That's just the chemical symbol for caesium.

#### Explanation:

$\text{Cs}$ is the chemical symbol used for caesium.

Caesium is an element located in group 1, period 6 of the periodic table, which means that it's an alkali earth metal.

It has an atomic number equal to 55, which implies that a neutral caesium atom has 55 electrons surrounding its nucleus.

Here's a very cool video of caesium's reaction with water - explained by the amazing Professor Poliakoff: