this honour goes to francium's lighter family member, caesium. And you can catch up with the story of the substance that's given us super light aircraft and the eponymous drink can on next week's ...

Estimates suggest that there is only about 30 g of francium in the whole of the ... a magneto-optical method for detecting elements and compounds based on a supposed time-lag in the development ...

“The chemistry of high pressures is quite exotic ... Note that older texts list both francium and cesium as least electronegative at 0.7, but the value for cesium was experimentally revised to the ...