Argon is a type of inert gas.
金は化学的に不活性な金属として知られている。
Gold is known as a chemically inert metal.
noun which may take the genitive case particle 'no'
General term for lack of activity or reactivity; less common than the chemistry sense.
この触媒は時間が経つと不活性になる。
This catalyst becomes inactive over time.
活性 describes a substance that is chemically active, while 不活性 describes one that is inactive or inert.
Formed regularly from the negative prefix 不 and 活性 “activity; reactivity.”