Electron gain enthalpy increases across the period and decreases down

1.	Electron gain enthalpy increases across the period and decreases down the group. Which of the following order of electron gain enthalpy is correct ?(a) F < Cl < Br < I (b) F < Cl > Br > I(c) I > Br > F < Cl (d) I < Cl < Br > F
Answer» Correct Option (b) F < Cl > Br > I Explanation : As we known electron gain enthalpy decreases down the group. Hence, the order should be F > Cl > Br > I but correct order of electron gain enthalpy is F < Cl > Br > I due to small size of Fathom. It requires high energy to become F by accepting electrons.

Electron gain enthalpy increases across the period and decreases down the group. Which of the following order of electron gain enthalpy is correct ?(a) F < Cl < Br < I (b) F < Cl > Br > I(c) I > Br > F < Cl (d) I < Cl < Br > F

Answer»

Correct Option (b) F < Cl > Br > I

Explanation :

As we known electron gain enthalpy decreases down the group. Hence, the order should be F > Cl > Br > I but correct order of electron gain enthalpy is F < Cl > Br > I due to small size of Fathom. It requires high energy to become F by accepting electrons.

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Electron gain enthalpy increases across the period and decreases down the group. Which of the following order of electron gain enthalpy is correct ?(a) F &lt; Cl &lt; Br &lt; I (b) F &lt; Cl &gt; Br &gt; I(c) I &gt; Br &gt; F &lt; Cl (d) I &lt; Cl &lt; Br &gt; F

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Electron gain enthalpy increases across the period and decreases down the group. Which of the following order of electron gain enthalpy is correct ?(a) F < Cl < Br < I (b) F < Cl > Br > I(c) I > Br > F < Cl (d) I < Cl < Br > F