The elements X,Y,Z,and T have the indicated e | vedclass

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(C) Metallic character is defined by the ability of an element to lose electrons easily.$X$ has $4$ valence electrons (a metalloid).$Y$ has $8$ valenc

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$Z = 2, 8, 8, 1$

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(C) Metallic character is defined by the ability of an element to lose electrons easily.$X$ has $4$ valence electrons (a metalloid).$Y$ has $8$ valence electrons (a noble gas).$Z$ has $1$ valence electron (an alkali metal).$T$ has $7$ valence electrons (a halogen).Since $Z$ has only $1$ electron in its outermost shell,it can lose this electron most easily to achieve a stable octet configuration. Therefore,$Z$ is the most metallic element.

The elements $X$,$Y$,$Z$,and $T$ have the indicated electronic configurations. Starting with the innermost shell,which is the most metallic element?

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