A transition metal X3+ has a configuration [Ar]3D4. What is the atomic no. of element X?
I thought being 3d4 it would be chromium but it happens to be manganese... anyone know why? thanks!
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Transition metal watch
- Thread Starter
- 10-04-2006 23:18
Offline17ReputationRep:Community AssistantStudy Helper
- Community Assistant
- Study Helper
- 10-04-2006 23:38
It's a 3+ ion so to get the metal add three electrons. Two go into the 4s orbital leaving one more to go into the 3d orbital. This gives an electron arrangement of [Ar]4s2 3d5 so it's manganese.