Iodine is not a "nobel" gas or even a noble gas but rather a nonmetal element that is not a gas at all at standard temperature and pressure, but a solid instead.
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Unlike the elements in the noble gas group such as neon, which are chemically very unreactive, iodine is quite reactive, like the other elements in its group such as fluorine and chlorine.
When iodine is heated, it sublimes directly from a solid to a purple gas. The gas produced is diatomic iodine molecules (I2).
nobel gas is a gas that cannot react with another gas
The purple gas formed when heating solid iodine in a test tube is iodine vapor. Iodine sublimes directly from a solid to a gas when heated, turning into a purple gas that condenses back into solid iodine crystals when cooled.
No, he was a nobel gas
The noble gas that comes before iodine is krypton.
The formula for iodine gas is simply I2(g). Iodine is a diatomic element. Therefore, in its elemental state, it contains two iodine atoms bonded to one another.
No, iodine is a violet coloured solid on heating it sublimed into violet gas.
Purple !! :) x
The chemical formula for iodine gas is I2, where two iodine atoms are covalently bonded together.
I2(g) is the symbol for iodine in its standard state (including its state symbol.)
Iodine gas contains a covalent bond, where the iodine atoms share electrons to form a stable molecule.
Energy is absorbed because the iodine is going from a liquid to a gas. This means that the iodine molecules are moving faster so they had to have absorbed more energy to do this.