They were discovered because the amount of energy they emit was measurable, but the method and manner in which it is emitted was inexplicable at the time.
Yes. A radioactive atom is a radioactive atom. If that atom exists as a single atom and is uncombined and it is radioactive, it's radioactive. If that same atom is chemically combined with another or other atoms, it's still radioactive. It's just that simple.
It is a radioactive element.
Radioactive atoms are atoms that have unstable nuclei, which can undergo radioactive decay to become more stable. During this process, they emit radiation in the form of alpha particles, beta particles, or gamma rays. This emission of radiation can cause a change in the atom's composition or energy level.
Before a radioactive atom ceases to undergo further radioactive decay, it must reach a stable configuration or decay into a non-radioactive isotope through the emission of particles or energy. This process continues until the atom reaches a state of stability where it no longer emits radiation.
Francium is radioactive, extremely rare, and was discovered in France (hence the name). It is pretty much useless because of its short half-life and rarity.
First the radioactive material and split the atom. So it is not a discovery is was hard work.
Yes. A radioactive atom is a radioactive atom. If that atom exists as a single atom and is uncombined and it is radioactive, it's radioactive. If that same atom is chemically combined with another or other atoms, it's still radioactive. It's just that simple.
No, it's called "radioactive." "Retroactive" is something that's active in regards to the past.
A radioactive atom is an atom of an element with an unstable nucleus.
The Curies discovered two radioactive elements: polonium and radium.
They originate in the nucleus of the atom.
chadwick discovered neutral atom
The initial atom is transformed in another atom.
Yes, radium and polonium are radioactive elements.
No. The Curies did not discover uranium. They discovered polonium and radium, of which polonium is more radioactive.
No, not always.
unstable, radioactive