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Sagot :
You can never say that any substance is a liquid, a solid, or a gas. Every substance you name can be all of those, depending on the TEMPERATURE.
At standard pressure . . .
-- Iodine is solid below 113.7°C, and gas above 184°C .
-- Bromine is solid below -7.2°C, and gas above 58.8°C .
-- "Room temperature" is considered to be the range from 20°C to 23.5°C.
-- Iodine is solid in that range.
-- Bromine one of only two elements that are known to be liquids AT
ROOM TEMPERATURE. The other one is mercury ... a metal.
At standard pressure . . .
-- Iodine is solid below 113.7°C, and gas above 184°C .
-- Bromine is solid below -7.2°C, and gas above 58.8°C .
-- "Room temperature" is considered to be the range from 20°C to 23.5°C.
-- Iodine is solid in that range.
-- Bromine one of only two elements that are known to be liquids AT
ROOM TEMPERATURE. The other one is mercury ... a metal.
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