Francium
Of metal. May also be referred to as Fr and atomic number 87.
A radioactive element of the alkali-metal group discovered as a disintegration product of actinium.
This concept's ID is @1~73924
Of metal. May also be referred to as Fr and atomic number 87.
A radioactive element of the alkali-metal group discovered as a disintegration product of actinium.
This concept's ID is @1~73924