Among the given gases, only chlorine is diatomatic and others are monatomic.
Why among the given gases, only chlorine is diatomatic and others are monatomic?
Cl belongs to seventh group in the periodic table. Thus it has an unpaired electron in its valence shell.
By sharing the lone electron of other Cl atom it gets stability and exist in diatomic form.
Other gases Ne and He belongs to 8th group or o group. They are inert gas and has completely filled configuration.
So, the won't react with others to get stability.
Therefore, Among the given gases, only chlorine is diatomatic and others are monatomic.
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