Which one of the following has the highest el | vedclass

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(B) The electronegativity of elements increases across a period from left to right and decreases down a group. Comparing the given elements: $Si$ (Gro

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$Cl$

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(B) The electronegativity of elements increases across a period from left to right and decreases down a group. Comparing the given elements: $Si$ (Group $14$,Period $3$),$P$ (Group $15$,Period $3$),$Cl$ (Group $17$,Period $3$),and $Br$ (Group $17$,Period $4$). Among these,$Cl$ is in the same period as $Si$ and $P$ but further to the right,and it is in the same group as $Br$ but in a higher period (smaller atomic size). Therefore,$Cl$ has the highest electronegativity.

Which one of the following has the highest electronegativity?

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