Question

The correct order of negative electron gain enthalpy of halogen atoms is: (a) F>Cl>Br>I (b) Cl>F>Br>I (c) I>Br> Cl> F (d) Cl>Br>I>F PLEASE ANSWER PROPERLY

Answer 1

Answer:

I<Br<F<Cl. Cl has the highest electron gain enthalpy in periodic table. In periodic table, down in group means from "top to bottom" , the electron gain enthalpy becomes less negative. This is because of increasing in size from F to I.

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Answer 2

Answer:

option ( a ) F> Cl > Br > l.........