🔹 Basic Information

• Element Name: Krypton
• Discovered By: Sir William Ramsay & Morris Travers
• Year of Discovery: 1898
• Category: Noble Gas
• Group: 18 (Group 0 – Noble Gases)
• State at Room Temperature: Gas (colorless, odorless) 💨

Krypton is a noble gas, which means it’s non-reactive and very stable. It’s found in tiny amounts in the air and is used in special lighting and science equipment. No, it’s not from Superman’s planet — but the name was inspired by the Greek word “kryptos”, meaning hidden. 🦸‍♂️✨

🔸 Chemical Properties

• Chemical Symbol: Kr
• Atomic Number: 36
• Atomic Mass: ~83.80 u
• Valency: 0 (inert, but can form rare compounds)
• Electronic Configuration: [Ar] 3d¹⁰ 4s² 4p⁶

Krypton has a full outer electron shell, which makes it chemically very unreactive — a key trait of noble gases.

📘 Basic Things to Know

Krypton is found in trace amounts in Earth’s atmosphere — about 1 part per million. It’s colorless, tasteless, and odorless, and doesn’t easily form compounds.

It glows with a pale white or greenish light when electrically charged, which is why it’s used in signs and high-speed photography flash lamps. 💡📸

🤔 Interesting Facts

• Krypton is used in airport runway lights, flash photography, and plasma displays.
• It was once used to define the meter (unit of length) in terms of the wavelength of light. 📏
• Krypton forms very few compounds, but one is krypton difluoride (KrF₂).
• The name “Krypton” means “hidden one” because it took time to find in the air. 🕵️‍♂️
• Despite its name, Krypton has no relation to the fictional planet from Superman comics. 😉

🔧 Common Uses

• Lighting: Used in fluorescent bulbs, flash lamps, and runway lights. 💡
• Photography: Krypton flash lamps are used for high-speed photography. 📸
• Lasers: Used in krypton-ion lasers for scientific and medical purposes. 🔬
• Plasma Screens: Found in some types of TVs and displays. 📺
• Insulated Windows: Krypton gas can be used between glass layers for thermal insulation. 🪟❄️

📚 Conclusion

Krypton is a quiet but powerful element, playing a key role in technology, lighting, and science. Though rare and invisible, it shines — literally — in the background of everyday innovations. For students, Krypton shows how even the “hidden” elements can have bright and surprising uses! ✨🔬