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Why (Ce Z=58) and (Th Z=90) have valance cell E.C respectively 4f(1)5d(1)6s(2),[Rn]6d(2)7s(2) Explain it.

Answer» Why (Ce Z=58) and (Th Z=90) have valance cell E.C respectively 4f(1)5d(1)6s(2),[Rn]6d(2)7s(2) Explain it.


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