Francium is a natural chemical element.
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
Yes, francium is synthetic. It is a highly radioactive element with a very short half-life, making it extremely rare and difficult to study in its natural form. Francium is typically produced in laboratory settings by bombarding thorium or other heavy elements with protons.
Francium is extremely unstable.
Natural francium is the decay product of actinium-227. Francium can be also obtained by nuclear reactions.
Natural francium exist in uranium and thorium ores.Artificial francium is obtained in particle accelerators.
Natural francium is the decay product of actinium-227. Francium can be also obtained by nuclear reactions.
Francium is a radioactive, very rare, natural chemical element.
Natural francium exist in uranium and thorium ores.
It is synthetic, but what we use to make concrete is natural AND synthetic.
Natural francium is very scarce - approx. 30 g in the Earth crust.
is bromine natural or synthetic?
Polyester is synthetic.