An electron is removed from sodium, this is an _ process and removing an electron from fluorine is an _ process.

endothermic, exothermic

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exothermic, endothermic

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endothermic, endothermic

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exothermic, exothermic

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Solution

The correct option is C endothermic, endothermic
An electron is removed from sodium, this is an endothermic process and removing an electron from fluorine is an endothermic process. Energy is always required to remove electron from an atom and hence, ionisation enthalpies are always positive. The process is always endothermic.

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