1. Botulinum toxin. Scientists differ about the relative toxicities of substances, but they seem to agree that botulinum toxin, produced by anaerobic bacteria, is the most toxic substance known. Its LD50 is tiny – at most 1 nanogram per kilogram can kill a human.
Among the 118 elements present in the periodic table, Plutonium is the most dangerous element which is harmful to human health and environment. It is dangerous owing to its toxicity, radioactivity and high reactivity. Plutonium is a heavy element with atomic number 94 and mass number 239 (actinide metal).
Strychnine: the notorious but rare poison at the heart of a modern mystery.
Blue death is extremely poisonous and can be fatal to humans.
Tetrodotoxin interferes with the transmission of signals from nerves to muscles and causes an increasing paralysis of the muscles of the body. Tetrodotoxin poisoning can be fatal.
It's not illegal to own almost any element (plutonium and certain types of enriched uranium excepted), but there are very strict shipping restrictions for radioactive and otherwise potentially dangerous elements.
The value of this plutonium, according to DOE defense programs officials, is about $23 per gram.
Uranium was discovered in 1789 by German chemist Martin Heinrich Klaproth. It is the heaviest naturally occurring element in the universe and is naturally radioactive. Its nucleus is unstable, so the element is in a constant state of decay, seeking a more stable arrangement.
These elements cooperate together: wood creates fire, fire creates earth, earth creates metal, metal creates water, and water creates wood. And these elements fight together: wood destroys earth, metal destroys wood, fire destroys metal, water destroys fire, and earth destroys water.
Hexavalent Chromium
Calcium chromate, chromium trioxide, lead chromate, strontium chromate, and zinc chromate are known human carcinogens.
Mercury, lead, chromium, cadmium, and arsenic have been the most common heavy metals that induced human poisonings.
Ununennium, also known as eka-francium or element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, which are used until the element is discovered, confirmed, and a permanent name is decided upon.
Most Expensive Natural Element
Although francium occurs naturally, it decays so quickly that it cannot be collected for use. Only a few atoms of francium have been produced commercially, so if you wanted to produce 100 grams of francium, you could expect to pay a few billion U.S. dollars for it.
Since the energy per fission from plutonium-239 and uranium-235 is about the same, the theoretical fuel value of fissile plutonium can be put at $5,600 per kilogram. Reactor-grade plutonium also contains non-fissile isotopes, reducing its value to about $4,400 per kilogram.
Plutonium and highly enriched uranium (HEU)—known as weapons usable material-are considered to pose the greatest proliferation risk because they are used to produce nuclear weapons.
The U.S. Nuclear Regulatory Commission allows for the sale and transportation of uranium to the public if certain conditions are met; the most pressing of which deals with the maximum allowable quantity any one person may own (7kg).
Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements.
Hydrogen and oxygen, on the other hand, cannot be decomposed into simpler substances. They are therefore the elementary, or simplest, chemical substances - elements.
The pufferfish's skin is covered in spines and spikes, which are exceedingly hazardous. Carry a toxin called tetrodotoxin (TTX), which is deadly to other fish and humans. You should avoid touching a pufferfish, especially if it is "puffed out." Your hands could be damaged and you could die.
Puffer fish may contain the potent and deadly toxins tetrodotoxin and/or saxitoxin which can cause severe illness and death. These are central nervous system toxins and are more deadly than cyanide.
Oganesson. Pronunciation. /ˌɒɡəˈnɛsɒn/