Po
Polonium
Metalloid
Polonium is a rare and highly radioactive element discovered by Marie Curie. It is one of the most toxic substances known.
Key Facts
Atomic Number
84
Atomic Weight
209
State
Solid
Half-life
138.4 days (Po-210)
Discovered
1898
Marie Curie
Overview
Description
Polonium is a rare and highly radioactive element discovered by Marie Curie. It is one of the most toxic substances known.
Discovery
Polonium was discovered in 1898 by Marie Curie.