Question

Potassium adopts the body-centered cubic unit cell in its crystal structure. If the atomic radius of potassium is 227 pm, find the edge length of the unit cell.

Answer 1

The edge length of the unit cell is 524 pm.

Potassium

The chemical element potassium has the atomic number 19 and the letter K (which stands for kalium in Neo-Latin). Potassium is a silvery-white metal that may be easily and gently sliced with a knife. [6] Within seconds of exposure, potassium metal quickly combines with air oxygen to produce flaky, white potassium peroxide. It was initially separated from potash, which is made up of plant ashes and from which it gets its name. Potassium is an alkali metal in the periodic table. All alkali metals have a single valence electron in the outer electron shell, which can be removed easily to produce a positive-charged ion called a cation, which interacts with anions to form salts.

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