Here's why:
* Chromium is a metal: Metals are generally not flammable. They do not readily react with oxygen to produce a flame.
* Chromium's reactivity: Chromium is relatively unreactive at room temperature. It forms a thin oxide layer that protects it from further oxidation and prevents it from igniting.
However, it's important to note that:
* Chromium compounds can be flammable: Some compounds of chromium, like chromium(VI) oxide (CrO3), are strong oxidizing agents and can react with organic materials causing fire.
* Chromium dust can be explosive: Fine chromium dust can be suspended in air and create an explosive mixture when ignited.
Therefore, although chromium itself is not flammable, it's essential to handle it and its compounds with care, considering potential fire hazards.
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