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who in many small places do many small things
the bomb was a plutonium implosion-type device with a yield of approximately 20 kilotons of TNT
Helium's atomic number is 2 and its symbol is He
It's difficult to fathom just how old these fossils truly are
Sodium Element Cube Mini Museum who in many small placesSodium's atomic number is 11 and its symbol is Na. Sodium is a bright silvery alkali metal that is about as soft as cold butter. Sodium makes up 50% of table salt along with chlorine. Sodium is essential for all animals as well as some plants. It is consumed by animals in sodium compounds. Pure sodium metal is highly reactive. In the presence of water, sodium will instantly catch on fire and explode. When pure sodium is exposed to the oxygen in the
