Francium—solid, liquid, or gas

Predicting of the first 101 elements, francium is the least stable. Its most stable isotope has a half-life of just 22 minutes Use your knowledge about the properties of other alkali metals to predict some of francium s properties. 

In the spirit of Dimitri Mendeleev s prediction of the properties of several, as of then, undiscovered elements, use the given information about the known properties of the alkali metals to devise a method for determining the corresponding property of francium. 

Using the periodic law as a guide, devise an approach that clearly displays the trends for each of the properties given in the table and allows you to extrapolate a value for francium. 

Predict whether francium is a solid, liquid, or gas. How can you support your prediction  

Element Melting point (°C) Boiling point (°C) Radius (pm) 

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