China Naming Network - Feng Shui knowledge< - Why are the chemical symbols of nitrogen, helium, neon, argon, krypton and xenon replaced by N2, helium, neon, argon, krypton and xenon?

Why are the chemical symbols of nitrogen, helium, neon, argon, krypton and xenon replaced by N2, helium, neon, argon, krypton and xenon?

Nitrogen-nitrogen

Helium-helium

Neon-neon

argon

krypton

Xenon-Xenon (Xenon)

Nitrogen molecule is a covalent bond molecule formed by two nitrogen atoms sharing three electron pairs, so the symbol of nitrogen is N2;

Rare gas molecules are very stable in chemical properties and generally do not undergo chemical reactions, so they are monoatomic molecules.