lexysmith4886 lexysmith4886 Today at 11:25 AM Chemistry Answered What is the density of Neon gas at standard temperature and pressure (STP)? The atomic mass of Neon is 20.18 atomic mass unit (u). A) 0.900 g/L B) 1.207 g/L C) 0.500 g/L D) 0.250 g/L