Answer :
Answer:
D. Ar
Explanation:
Chemical reactive order: lanthanides > transition metal > O,S> Ar
Argon have noble gas element, Electron configuration: [Ne] 3s²3p⁶
so chemically inert, absence of chemical reactivity.
Answer:
D. Ar
Explanation:
Chemical reactive order: lanthanides > transition metal > O,S> Ar
Argon have noble gas element, Electron configuration: [Ne] 3s²3p⁶
so chemically inert, absence of chemical reactivity.