What happens when sodium reacts with fluorine to produce sodium

Balanced chemical reaction: 2Na(s) + F₂(g) → 2NaF(s) + energy.

This is exothermic reaction (energy or heat is released), because reactants have higher energy than products of reaction.

In ionic salt sodium fluoride (NaF), fluorine has electronegativity approximately χ = 4 and sodium χ = 1 (Δχ = 4 - 1; Δχ = 3), fluorine attracts electron and it has negative charge and sodium has positive charge.

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