Question

which of the following metals catch fire on reaction with air.

1.magneaium
2.manganese
3.potassium
4.calcium
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Answer 1

The metal Potassium catches fire on reaction with air.

Answer: C) Potassium

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Answer 2

Potassium catch fire on reaction with air. Option(3) is the correct answer.

• Potassium is the most reactive element between given elements. Potassium has only one electron in the last shell due to which it is a very reactive metal.
• When Potassium reacts with oxygen, a lot of heat is released that is which is an exothermic reaction and hydrogen gas is also released. This hydrogen gas catches fire.

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