Which of the following is not correctly match | vedclass

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(B) For $Z = 48$ (Cadmium),the configuration is $[Kr] \, 4d^{10} \, 5s^2$. It belongs to group $12$ and period $5$. This is correct.For $[Xe] \, 4f^7

Vedclass · Accepted Answer

$[Xe] \, 4f^7 \, 5d^1 \, 6s^2;$ group no. $= 3^{rd},$ period no. $= 6^{th}$

Vedclass · Answer

(B) For $Z = 48$ (Cadmium),the configuration is $[Kr] \, 4d^{10} \, 5s^2$. It belongs to group $12$ and period $5$. This is correct.For $[Xe] \, 4f^7 \, 5d^1 \, 6s^2$ (Gadolinium),the total number of electrons is $54 + 7 + 1 + 2 = 64$. It belongs to the Lanthanoid series (group $3$,period $6$). The given option states group $8$,which is incorrect.For $[Rn] \, 5f^{14} \, 6d^3 \, 7s^2$ (Dubnium),it belongs to group $5$ and period $7$. This is correct.For $Z = 56$ (Barium),the configuration is $[Xe] \, 6s^2$. It belongs to group $2$ and period $6$. This is correct.Thus,option $B$ is not correctly matched.

Which of the following is not correctly matched?

Similar Questions

Anything that influences the valence electrons will affect the chemistry of the element. Which one of the following factors does not affect the valence shell?
$(a)$ Valence principal quantum number $(n)$
$(b)$ Nuclear charge $(Z)$
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Which of the following statements is correct?

Which of the following points is never the same for $IP$ and $EA$?

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