'The seventh period begins with francium followed by this element discovered in France in 1898'
radium (discovered by the Curies)
FUN WITH THE PERIODIC TABLE: The seventh period begins with francium followed by this element discovered in France in 1898
The seventh period begins with francium followed by this element discovered in France in 1898
The seventh period begins with francium followed by this element discovered in France in 1898
FUN WITH THE PERIODIC TABLE
radium discovered by the Curies
FUN WITH THE PERIODIC TABLE