The most expensive element on Earth: $1 billion per gram!
Most expensive element in the world | $1 billion per gram?
Top 10 most expensive elements in the world
World's Most Expensive Element!
Most expensive and most Rarest Element on the Earth.#InWorld,#Rarest,#MosExpensiveElements
The Most Stable Element On Earth
Most expensive element. Francium #element
"World’s Most Expensive Element".# 1 Billion$ per Gram!
#TOP 5 MOST EXPENSIVE ELEMENT IN THE WORLD
The Most Expensive Element in the World | 1 Billion Dollars per Gram?
FRANCIUM 😱 World's Most Expensive Element! #facts #askiitians
Top Ten Most Expensive Elements On Earth
The True Cost of Francium | Earth's Most Valuable but Short-Lived Element
The world's most expensive element? most expensive element on earth #fact
Most expensive element: francium
The world's most expensive element
