From Arsenic to Zirconium

CESIUM, Cs

ATOMIC CLOCK

Big soft Cs can’t take the heat, melts fast to liquid gold,

Its love affair with water’s quite explosive to behold!

Helps glass to withstand bumps ’n’ knocks,

Its formate salt floats well-drilled rocks.

Each second, its atomic clock’s exactness is extolled.

 see-ess

Big soft Cs can’t take the heat, melts fast to liquid gold,

THE SIXTH MEMBER OF THE GROUP 1 ALKALI METALS

Cesium is one of the softest metals. With an atomic radius of 298 picometers (298 × 10^–12 m), cesium’s atoms are among the biggest on the periodic table. Cesium’s pale golden color makes it one of only three metallic elements that aren’t silver colored ...