Why is neon exists as a monoatomic gas?

neon
  • Neon is from the Noble Gases group on the periodic table. 
  • Neon has electron arrangement is 2.8 (valence electron is 8). 
  • Neon already achieves the octet electron arrangement. 
  • Neon does not need to donate the electron with other element. 
  • Therefore they do not gain or lose electrons making them exist as individual atoms. 
  • Neon exists as a monoatomic gas.