neon
The most toxic element on Earth is considered to be polonium, specifically polonium-210. It is a highly radioactive element that emits alpha particles, making it extremely toxic if ingested or inhaled. It is about 250,000 times more toxic than hydrogen cyanide.
Polonium is between the most poisonous materials; the LD5o for polonium-210 is 1 microgram.
There are several poisonous elements, but one of the most well-known is arsenic. Arsenic is a naturally occurring element that can be toxic in various forms and concentrations. It is known to cause serious health issues when ingested or inhaled.
Polonium doesn't contain another element.
Polonium doesn't contain another element.
Polonium is between the most poisonous materials; the LD5o for polonium-210 is 1 microgram.This is due to the very high specific activity of polonium; 4,5.10E3 Ci/g.
The chemistry of polonium is not known in details but I suppose that this element is oxygen.
Oxygen, hydrogen, halogens
Polonium is a natural radioactive element.
Recent events would suggest Polonium Po as the most lethal non-metllic element. see link.
I have had Wrigley's chewing gum recently which was in Cobalt flavour. It has a mild metallic smell like burnt iron.
Oxygen, hydrogen, halogens