the ionization enthalpy decreases as we moves down the group but in the video it is given only till ceaseum why not francium? it has been excluded in the video for most of the properties? is francium special element?

Asked by Ishita Tandon | 12th Nov, 2010, 12:00: AM

Expert Answer:

Dear student
Francium is the most unstable of the naturally occurring elements. The most stable isotope of francium is francium-223 which has a maximum half-life of only 22 minutes.
We hope that clarifies your query.

Answered by  | 13th Nov, 2010, 12:34: AM

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