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AP EAMCET2016ChemistryClassification of Elements and Periodicity in Properties

An element has [ Ar ] 3 d^1 configuration in its +2 oxidation state. Its position in the periodic table is

Options

  1. Aperiod-3, group-3
  2. Bperiod-3, group-7
  3. Cperiod-4, group-3
  4. Dperiod-3, group-9

Correct answer

C. period-4, group-3

Step-by-step solution

Electronic configuration of the element in +2 oxidation state is [ Ar ] 3 ~d ^1 . Its electronic configuration in neutral state: [Ar] 3 ~d ^1 4 ~s ^2 Period = Max. principal quantum no. n=4 Group = Total number of valence shell electrons =3

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