Francium (Fr) down a group, the radius increases.
At room temperature most of the elements are solid. except Cs,Ga,Br,Fr,Hg (these are liquid) and nonmetals which are gaseous..except Br which being a nonmetal is not a gas.
Li+ , Na+ , K+ , Rb+ , Cs+ , Fr+
Rubidium, Cesium, Francium
We know the chemical symbols of caesium and francium are Cs and Fr, respectively.
In reaction with water and oxygen Fr is more reactive than Cs
The alkali metals are: Li, Na, K, Rb, Cs, Fr.
H Li Na K Rb Cs Fr
group 1 is Li, Na, K, Rb, Cs and Fr.
Group 1 Li, Na, K, Rb, Cs, Fr
Li Na K Rb Cs Fr (hope this is help)
Li+,Na+,K+,Rb+,Cs+,Fr+