Question : Which one of the following forms of phosphorus is most reactive?
Option 1: Black phosphorus
Option 2: White phosphorus
Option 3: Violet phosphorus
Option 4: Red phosphorus
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Correct Answer: White phosphorus
Solution : The correct option is White phosphorus .
Due to its strong reactivity and ability to spontaneously ignite in air at room temperature, white phosphorus is also known as "yellow phosphorus". Because it can catch fire when in contact with air, it is kept underwater or in an inert environment during storage. White phosphorus is employed in chemical reactions, matches and incendiary equipment.
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