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Chem as help!

Hi, i am struggling to answer the following question:
Q12.
Which shows the electron configuration of an atom of a transition metal?
A [Ar] 4s23d0
B [Ar] 4s23d8
C [Ar] 4s23d10
D [Ar] 4s23d104p1

So the answer to this question is B. But can it not be B & C ..B representing nickel and C representing Zinc. Nickel and Zinc are both transition metals, no ?
Original post by ZZZ_A
Hi, i am struggling to answer the following question:
Q12.
Which shows the electron configuration of an atom of a transition metal?
A [Ar] 4s23d0
B [Ar] 4s23d8
C [Ar] 4s23d10
D [Ar] 4s23d104p1

So the answer to this question is B. But can it not be B & C ..B representing nickel and C representing Zinc. Nickel and Zinc are both transition metals, no ?

No. Zinc isn’t a transition metal.

A transition metal is one capable of forming at least one stable ion with a part-filled d subshell.

The only stable ion zinc forms is Zn^2+, which has a full d subshell. Nickel forms Ni^2+, which has a partially filled d subshell
It’s weird that they put this in AS. A transition metal is an element that forms a stable ion with incomplete D orbitals. By this definition Zinc is NOT a transition metal as it forms a stable ion with full D orbitals. The same goes for Scandium as it forms a stable ion that doesn’t hold any electrons in its D orbitals. You really build upon this in A2 but they clearly sprinkle it in AS too. Hopefully this makes sense.
Reply 3
Original post by Trueolive
It’s weird that they put this in AS. A transition metal is an element that forms a stable ion with incomplete D orbitals. By this definition Zinc is NOT a transition metal as it forms a stable ion with full D orbitals. The same goes for Scandium as it forms a stable ion that doesn’t hold any electrons in its D orbitals. You really build upon this in A2 but they clearly sprinkle it in AS too. Hopefully this makes sense.


Original post by TypicalNerd
No. Zinc isn’t a transition metal.

A transition metal is one capable of forming at least one stable ion with a part-filled d subshell.

The only stable ion zinc forms is Zn^2+, which has a full d subshell. Nickel forms Ni^2+, which has a partially filled d subshell


Thank you guys!
Fun fact: the IUPAC definition of a TE means that Sc is now a TE.

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