Question

among halozens the correct order of amount of energy released in electron gain (electron gain enthalpy) is

a) F>Cl>Br>L
b) F<Cl<br<L
c) F<Cl>br>L
d) F<Cl<Br<L​

Answer 1

Answer:

a) F>Cl>Br>L

Explanation:

The electron gain enthalpy values of halogens become more negative in the order F>Cl>Br>I. ... However the electron gain enthalpy of F is less negative than of Cl because of its small size. The additional electron in case of F will be added to the 2p orbital while in case of Cl it will go in the 3p orbital

Answer 2

Answer:

c is correct

Explanation:

because the size of fluorine is too small as size decreases from left to right inside period, whereas chlorine has a larger size to accommodate electrons hence electron affinity of chlorine is more than fluorine.

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