A measure of the average kinetic energy of particles arrowBoth energy that a substance has because of the arrangement of its atoms arrowBoth the process of breaking down an existing set of substances to form a new set of substances arrowBoth a phase in a reaction in which existing bonds break to form new bonds arrowBoth energy required to start a reaction arrowBoth

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the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.

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