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Question

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

A
endothermic, exothermic
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B
exothermic, endothermic
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C
endothermic, endothermic
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D
exothermic, exothermic
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E
more information is needed
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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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