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Question
Q166) A transition element X has a configuration (Ar)3d4 in its +3 oxidation state. Its atomic number is



SOLUTION

(Ar)3d4 Numberelectrons = 18+4=22
Now this atom have +3 oxudation state i.e. it has lost three electron
∴ total electroninatom = 22+3 = 25
Answer:(c)