Question

Why are sodium and chlorine more active elements?​

Answer 1

Answer:

It takes more energy to remove an electron from a sodium atom to form an Na+ ion than we get back when this electron is added to a chlorine atom to form a Cl- ion. Once these ions are formed, however, the force of attraction between these ions liberates enough energy to make the following reaction exothermic.

Explanation:

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Answer 2

It takes more energy to remove an electron from a sodium atom to form an Na+ ion than we get back when this electron is added to a chlorine atom to form a Cl- ion.