Which one of the following elements has the h | vedclass

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(D) The correct answer is $(D)$.Fluorine $(F)$ has the highest ionisation energy among the given elements.Ionisation energy generally increases across

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$F$

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(D) The correct answer is $(D)$.Fluorine $(F)$ has the highest ionisation energy among the given elements.Ionisation energy generally increases across a period from left to right due to an increase in effective nuclear charge and a decrease in atomic size.Among $Na$ (Group $1$),$Mg$ (Group $2$),$C$ (Group $14$),and $F$ (Group $17$),$F$ is located furthest to the right in the periodic table,resulting in the strongest attraction between the nucleus and the valence electrons,thus requiring the most energy to remove an electron.

Which one of the following elements has the highest ionisation energy?

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