0
Francium is a natural chemical element but the total quantity of francium in the earth crust is only approx. 30 g. Francium has ca. 40 isotopes and isomers but only two are natural: 221Fr (in the neptunium decay chain series) and 223Fr (in the actinium decay chain series). Artificially preparation of francium isotopes is also extremely difficult and expensive; and the chemistry and physics of isotopes was developed essentially after 1940. Supplementary, the most stable isotope of francium has a half life of only 21,8 minutes and is strongly radioactive; the half lives of the artificially prepared isotopes are more smaller.
This is sufficient reason to explain why francium was later discovered and why even today is only slightly studied.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is Franciums period?
FrIO4
What are franciums chemical features?
The chemistry of francium is practically unknown today.
How long after the discovery of cells did it take the scientific Community to accept it?
150 years
How long after the discovery did it take scientific community to accept the existence of the cell?
150 years
How long after discovery did it take the scientific community to accept the existence of cells?
150 years
Is the discovery rule an exception to the statute of limitations?
The two are not related. The statute of limitations is for getting notice of a suit. Once that is there, discovery can take as long as necessary.
After an oil discovery is made approximately how long does it take the oil to reach the market?
10 years
How long after their discovery did it take the scientific community to accept the existence of cell?
150 years
How long did the ships Susan Constant the Godspeed a the Discovery take to get to America?
It usually took up to 3 or 4 months
How long did it take Captain Scott to get to Antarctica on the Discovery?
Discovery left the Isle of Wight on 6 August 1901 and finally arrived in McMurdo Sound on 8 February 1902. With stops, then, about six months.
How long did it take to build shuttle discovery?
3 and 1/2 years. It started in august 1979 and was finished January 1983
What molecules help control movement of substances thought cell membranes?
how long after their discovery did it take the scientific community to accept the existence of cells
