Question

why we can cut easily Sodium and Lithium with a knife and which reaction is known as a what is called​

Answer 1

Due to their softness, and their shiny surface
tarnishes rapidly in air due to oxidation.
So, oxidation is the reaction mate.

Be brainly

Answer 2

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Sodium in its pure form is very reactive. It is a very soft metal that can be easily cut with a knife. ... Sodium will float on water, but it will also react violently when coming into contact with water.

Not only them, even iron and titanium can be cut with a knife. Only thing is the knife has to be harder than the metal. Sodium and potassium are soft metals. So an ordinary knife and a little pressure is enough to cut them.

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