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(A) Metallic character is defined as the tendency of an element to lose electrons. It increases down a group and decreases across a period from left t

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$Si < Be < Mg < K$

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(A) Metallic character is defined as the tendency of an element to lose electrons. It increases down a group and decreases across a period from left to right. The positions of the elements in the periodic table are: $Be$ (Group $2$,Period $2$),$Mg$ (Group $2$,Period $3$),$K$ (Group $1$,Period $4$),and $Si$ (Group $14$,Period $3$). Comparing these: $1$. $Be$ and $Mg$ are in Group $2$,so $Mg > Be$. $2$. $K$ is in Group $1$,which is more metallic than Group $2$ elements. $3$. $Si$ is a metalloid and is the least metallic among these. Thus,the order of increasing metallic character is $Si < Be < Mg < K$.

Which of the following represents the correct order of metallic character of the given elements?

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