The chemistry of francium is practically unknown today.
This compound is not known today.
Francium is not a compound, but a chemical element.
Francium is a GROUP 1 metallic ELEMENT. It is a the bottom of Group 1 . Its partner elements in the Group are, lithium, sodium, potassium, rubidium, & caesium. They all react with water with increasing violence. to the point of explositivity. Francium is also Radio-Active, so you will not find it in any school lab. or even industrial labs. It is probably kept in a very special nuclear research lab. under very controlled conditions. It was discovered by Marie Curie, in France, hence its name.
Francium has not applications and the oxide cannot be prepared.
The chemistry of francium is not known.
The chemistry of francium is not experimentally known; it is only estimated.
Francium bromide is FrBr.
Its an element.
Calcium fluoride is a binary compound.
No it is not. It is a binary molecular compound. Here is your answer
A binary compound is a chemical compound that contains exactly two different elements. O2 has one, so its not a binary compound.
A binary compound is a compound that consists of two elements.