Name:  Krypton

Atomic Symbol and Mass Number: Kr [36]

Electron Configuration: [Ar] 3d    4s    p

Atomic Radii: 202 pm

Electron Affinity: 0

Oxidation states: +2, 0

Electronegativity value: 3.00

Elemental Group: Noble Gas

Uses and properties:

• Colorless, odorless, inert gas

• Extremely unreactive except with the very reactive gas fluorine

• Solid krypton is white and crystalline

• Lighting products such as  flashing airport runway lights

• Krypton-based bulbs used as brilliant light source in high speed photography

• Employed with other gases for a luminous neon light

• Filling gas for energy-saving fluorescent lights and incandescent bulbs

• Measurement of nucleosynthesis in the regions of interstellar space

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 Lewis diagram: