Notes:
All condensed nonmetals have these common features; they differ only in the mobility of free carriers and muons, the sensitivity to impurities and/or disorder, and the density of states for assorted elementary excitations – which can vary by orders of magnitude!
In the early days of Muonium Chemistry (1970's) there was a protracted debate over whether the “residual” diamagnetic fraction in liquids and solids was the result of thermal or epithermal (“hot atom”) reactions. The answer was obvious from the outset: “Yes ! ”