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Liquid hydrogen is the coldest substance known to man, minus 400 degrees
Noble gases like helium, neon, and argon are considered the least reactive substances known to man. They have full outer electron shells which makes them very stable and unreactive under normal conditions.
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There are currently 118 known elements in the periodic table.
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Robert Hutchings Goddard of USA.
The most common liquid metal known to man is mercury. It is also often referred to as quicksilver. It is heavy and silvery-white in color.
Because they' have the worst customer service known to man.
Liquid hydrogen is the coldest substance known to man, minus 400 degrees
I barely think there is such a thing,but it may be kept in a diamond container because the structure of a diamond is the strongest one there is known to man.
The most common liquid metal known to man is Mercury. It is also often referred to as quicksilver. It is heavy and silvery-white in color.
There are at least 270 different species of turtle known to man. This includes freshwater turtles, tortoises, and sea turtles.
Hammers were one of the earliest known tools, proven to exist at least 2,500,000 years ago. - Tools like the common claw hammer have existed for at least 450 years and no known date or inventor is recorded.
Ludwig Feuerbach
poo man did
One of Edgar Allan Poe's least known stories is "The Angel of the Odd: An Extravaganza," a satirical tale about a man encountering a bizarre supernatural creature. It is lesser known compared to his more famous works like "The Tell-Tale Heart" or "The Raven."