Periodic table / Krypton

Overview

Krypton (from Greek:κρυπτός kryptos "the hidden one") is a chemical element with symbol Kr and atomic number 36. It is a member of group 18 (noble gases) elements. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionally distilling liquefied air, and is often used with other rare gases in fluorescent lamps.

Electron configuration

The electron configuration of Krypton is [Ar] 3d10 4s2 4p6, with electron shells of 2, 8, 18, 8.

Physical and chemical properties

Krypton is classified as a noble gas. It has an atomic mass of 83.798 and exists as a gas at standard conditions, appearing as colorless gas, exhibiting a whitish glow in a high electric field.

Real-world uses of Krypton

As a noble gas, Krypton is chemically inert and is primarily used in lighting, insulation, or specialized industrial and scientific applications.

Interesting facts about Krypton

• Krypton has the atomic number 36 and chemical symbol Kr.
• It belongs to period 4, group 18 of the periodic table.
• Krypton was discovered by William Ramsay.

Explore Krypton interactively

Want to compare Krypton with other elements or see it highlighted on the full table? Open the interactive periodic table and click on Kr to explore properties, trends, and neighboring elements. You can also test your knowledge with our periodic table quiz game.