What Is The Radioactivity & What Is The Most Radioactive Element?
Radioactivity is a natural process, as old as the Universe
What is radioactivity and what is the most radioactive element? Radioactivity is not the work of man, who, on the contrary, has suffered from it since its appearance on Earth, but rather a natural process, as old as the Universe; it is present in the stars, on our planet, and in our own bodies. In fact, radioactivity is the emission of energy due to the decay of the nuclei of some types of atoms and isotopes.
What is Radioactivity?
Radioactive nuclei are unstable nuclei that decompose by emitting particles such as photons, electrons, neutrinos, protons, neutrons, or alpha particles (two protons and two neutrons united to form a helium nucleus). Some of these particles are known as ionizing particles. Ionizing particles have enough energy to knock electrons away from atoms or molecules. The degree of radioactivity depends on the fraction of unstable nuclei and the frequency with which these nuclei decay into other elements.

Effects of Radioactivity
Radioactivity can also be used to generate usable energy from satellites and spacecraft that cannot harness the sun's energy due to distance, for medical imaging, for specific cancer treatments, for radiometric dating, and for law enforcement research of nature and origin of the matter.
The Discovery of Radioactivity
Radioactivity was discovered in 1896 by physicists Henri Becquerel, Pierre Curie, and Marie Curie, providing clues to the laws that govern nature.
A modern technological society cannot in any way ignore the use of radioactive isotopes. Radioactivity has a wide spectrum of uses in medicine, chemistry, energy, environmental science, materials science, manufacturing, and national security.

What is The Most Radioactive Element?
Chemistry chose one of her most innovative discoveries as the subject of her doctorate. Becquerel had observed that one of the uranium salts gave out rays that impressed a photographic plate wrapped in black paper, and this seemed very curious to her. She soon saw that the radiation was greater the higher the uranium concentration of the ore, regardless of other conditions. She called this property 'radioactivity'. She did the same with other metals and found that only thorium emitted radiation, apart from uranium.
Later, she investigated with her husband until she isolated two new radioactive elements, polonium, and radium, the latter of great power. In 1903, Marie read her doctoral thesis, Investigations Concerning Radioactive Elements, a work that earned her the Nobel Prize in Chemistry that same year. Since then, the Curies warned about the danger of exposure to radioactivity, although very soon they also saw its medical possibilities.
The most important point in her career would come in 1911, the year in which she received the second Nobel Prize for the discovery of radium. During World War I she set up a mobile X-ray unit to treat the wounded and, after the war, she obtained 50 grams of radium from the United States to investigate.
This, aside from helping her study her substances with medical application in recent years, brought negative consequences to her health, which weakened in the form of blindness due to radium. In fact, her death took place at the age of 67 due to severe pernicious anemia: her marrow, destroyed by radiation, was unable to make red blood cells.

What is Radioactive Fallout and What Can It Cause?
These particles fall to the ground during and after the bombing or accident and can cause illness in people who are exposed to them by staying outside. Radioactive fallout is most dangerous in the first hours after the explosion, as this is when it emits the highest levels of radiation.
Possible Damage From Radioactive Fallout
On the other hand, the acid rain that falls on the ground can contaminate crop fields and the food that is grown in them; as well as marine fauna if it falls on the sea or drinking water found in swamps and aquifers. Likewise, some foods derived from animals, such as cow's milk, can also be affected by radiation when it is going to be milked.

Short and Long Term Effects
However, in the future, they may develop some effects due to this event, according to health professionals. First, radiation exposure can "increase the risk" of cancer. Also, the release of radioactive iodine in nuclear explosions can cause cancer of the thyroid gland. To counteract this effect, there are potassium iodide treatments, but they should not be taken unless recommended by a doctor.
Finally, some of the possible consequences due to exposure to radioactive fallout are: carcinogenesis, formation of ocular cataracts, decreased fertility, chronic radiodermatitis, and genetic mutations.