Question

What Is Electron gain enthalpy ?

Answer 1

electron gainenthalpy is defibed as

Answer 2

❤ HERE IS YOUR ANSWER ❤

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Electron gain enthalpy of an element is the energy when a neutral outlying gaseous atom accepts an extra electron to form the gaseous anion.
It is denoted by ∆egH.

➡ The ∆egH1 for most of the elements is NEGATIVE while their ∆egH2 is always POSITIVE.

➡ The ∆egH1 becomes MORE NEGATIVE from LEFT to RIGHT in a PERIOD and LESS NEGATIVE from TOP to BOTTOM in a GROUP.

➡ The ∆egH of elements having exactly half - filled and completely filled orbitals is POSITIVE.
Like :- ∆egH of Be, Mg, Ca, N and inert gases is positive.

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