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प्रश्न
Which of the following ions has d6 outer electronic configuration?
पर्याय
Cr2+
Co3+
Mn3+
Fe3+
MCQ
उत्तर
Co3+
Explanation:
Cr2+: [Ar] 3d4
Co3+: [Ar] 3d6
Mn3+: [Ar] 3d4
Fe3+: [Ar] 3d5
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