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matrenka [14]
3 years ago
15

Which equation represents the first electron affinity of chlorine?

Chemistry
1 answer:
mars1129 [50]3 years ago
7 0
Answer:
            Option-A [<span>Cl (g) + e</span>⁻ <span> →  Cl</span>⁻<span> (g)] is the correct answer.

Explanation:
                   First electron affinity is the amount of heat evolved when an electron is added to a neutral atom.
                   Such problems often come in questions related to Born-Haber Cycle topic. Let suppose Mg and Cl</span>₂ is reacted to form<span> MgCl</span>₂ crystal.

Then the Cl₂ gas is first atomized as follow,

                                        Cl₂     →     2 Cl

After atomization an electron is added to neutral chlorine atoms, as,

                                      Cl  +  e⁻    →     Cl⁻

So, option A is correct choice.
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