The maximum and minimum melting points (m.p.) | vedclass

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(A) In the $1^{st}$ transition series ($3d$ series),the maximum melting point is observed for $Cr$ $(Z=24)$ due to the stable $d^5$ configuration,whic

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$Cr$ and $Zn$

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(A) In the $1^{st}$ transition series ($3d$ series),the maximum melting point is observed for $Cr$ $(Z=24)$ due to the stable $d^5$ configuration,which leads to strong metallic bonding. The minimum melting point is observed for $Zn$ $(Z=30)$ because it has a completely filled $d^{10}$ configuration,resulting in weak metallic bonding.In the $2^{nd}$ transition series ($4d$ series),the maximum melting point is observed for $Mo$ $(Z=42)$ due to the stable $d^5$ configuration. The minimum melting point is observed for $Cd$ $(Z=48)$ due to the stable $d^{10}$ configuration.Therefore,the maximum and minimum melting points for the $1^{st}$ series are $Cr$ and $Zn$,and for the $2^{nd}$ series are $Mo$ and $Cd$.

The maximum and minimum melting points $(m.p.)$ of the $1^{st}$ transition series and $2^{nd}$ transition series respectively are obtained with:

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