Which out of the following belongs to $3 d$ -series?

copper

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cobalt

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gold

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silver

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Solution

The correct options are
B copper
C cobalt
If the electronic configuration of d-Block elements is $4 s^{1 o r 2}, 3 d^{1 - 10}$ then the elements are belonging to 3d-series.They are Sc,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn.

Hence, options A & B are correct.

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Similar questions

[A r] 3 d^{10} 4 s^{1}

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