Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
EasyTo which group and period does the element belong if the electronic configuration of an element in its $-2$ oxidation state is $1s^2 2s^2 2p^6 3s^2 3p^6$?
- Aperiod $3$,group $16$
- Bperiod $3$,group $17$
- Cperiod $4$,group $16$
- Dperiod $4$,group $17$
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