In this video, nitrogen is presented in a liquid state. Liquid nitrogen is one of the coldest elements with a boiling point of about -196C, so by that you can see that it is extremely cold. Also, the bond between two nitrogen atoms is the strongest bond of two of the same atoms. But when separated the bond releases energy and an explosion. This is why many explosives, such as TNT use nitrogen atoms. But I think that nitrogen is the most interesting of the elements because you can use it freeze the lens of somebodies eye, mend it back into shape, and place it back. when it unfreezes, the patient will see normally.
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