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Which of the following is incorrect set
Group Period
1) Z= 38 IIA 5th
2) Z= 58 IIIB 6th
3) Z= 25 VIIB 4th
4) Z= 22 VIB 4th

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answer is D.

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Detailed Solution

Z=38 $\to$ [Kr] 5s² $\to$ 5^th period and IIA group

Z=58 $\to$ [Xe]4f¹5d¹6s² $\to$ 6^th period and IIIB group

Z=25 $\to$ [Ar] 3d⁵4s² $\to$ 4^th period and VIIB group

Z=22 $\to$ [Ar] 3d²4s² $\to$ 4^th period and IVB group

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