Which of the following statements is incorrec | vedclass

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(C) Option $A$ is correct as $Li$ and $Mg$ show diagonal relationship due to similar ionic potential.Option $B$ is correct as $s$ and $p$-block elemen

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In the $5^{	ext{th}}$ period,the subshells $5s, 4d, 5p$ are filled.

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(C) Option $A$ is correct as $Li$ and $Mg$ show diagonal relationship due to similar ionic potential.Option $B$ is correct as $s$ and $p$-block elements (excluding noble gases) are representative elements.Option $C$ is incorrect because the $5^{	ext{th}}$ period involves filling of $5s, 4d,$ and $5p$ subshells. The $4f$ subshell is filled in the $6^{	ext{th}}$ period (Lanthanoids).Option $D$ is correct as it represents the general electronic configuration of $f$-block elements.

Which of the following statements is incorrect?

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