April 2020
Intermediate to advanced
296 pages
5h 20m
English

Fr props up the alkalis, so fleetingly it glows,
Yet Perey’s bench-work prowess help’d its presence to expose.
eff-arr
THE LAST OF THE GROUP 1 ALKALI METALS
[prop up: phrasal verb — to support or bolster from underneath]
Francium is the last and the heaviest of the alkali metals and sits at the bottom of group 1 on the periodic table. It’s a highly radioactive element that occurs naturally in uranium ores via the following process. Uranium-235 ...