Lead's high density, low melting point, ductility and relative inertness to oxidation make it useful. Fluorine is a good electron-withdrawing group in terms of synthetic accessibility and biological inertness. Because of its chemical inertness, PTFE cannot be cross-linked like an elastomer. Glassware became more immune to thermal shock while maintaining chemical inertness. For these properties, chemical inertness and high atomic or molecular weight is desirable. PCBs are technically attractive because of their inertness, which includes their resistance to combustion. Exploiting its volatility and chemical inertness, octafluorocyclobutane may be found in some aerosolized foods. With this coloration and chemical inertness, titanium is a popular metal for body piercing. Because of its resilience and inertness, it is used for fabricating many objects of commerce. Noble gases, particularly xenon, are predominantly used in ion engines due to their inertness. The noteworthy feature of hydrocarbons is their inertness, especially for saturated members. This inertness yields serious ecological issues if they are released into the environment. He is frustrated by the inertness of Satan and now wants an aggressive Hell. Disadvantages can be inertness (through co-ordination) and loss of interaction. Due to its inertness, it is used in many medical applications including medical implants.