Which of the following sets of elements is wr | vedclass

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(B) Metallic character refers to the tendency of an element to lose electrons. In a group,metallic character increases as we move down because the ato

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$Be, Mg, Ca$

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(B) Metallic character refers to the tendency of an element to lose electrons. In a group,metallic character increases as we move down because the atomic size increases and the valence electrons are held less tightly by the nucleus. In a period,metallic character decreases from left to right because the atomic size decreases and the effective nuclear charge increases,making it harder to lose electrons. For option $B$: $Be$ (Group $2$,Period $2$),$Mg$ (Group $2$,Period $3$),and $Ca$ (Group $2$,Period $4$). As we move down Group $2$ from $Be$ to $Mg$ to $Ca$,the metallic character increases. Therefore,the order $Be < Mg < Ca$ represents increasing metallic character.

Which of the following sets of elements is written in the order of their increasing metallic character?

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