Questions tagged [electron-affinity]

The amount of energy released when an electron is added to a species in the gaseous phase to form a negative ion. Not to be confused with [ionization-energy].

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More Anti-bonding or less bonding electrons?

Is a molecule more stable with less bonding electrons or more anti-bonding electrons? This question arose when I was asked the stability comparison between $\ce{N2^+}$ and $\ce{N2^-}$.
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Electron Gain Enthalpy [duplicate]

When an electron ($e^-$) is added to $\ce{Cl}$ ,i.e., $$\ce{Cl + e^- -> Cl^- + ∆_{gh}H}$$ We can see that energy is released. My question is where is this energy coming from? What happens within ...
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How can chlorine be 'only' the third-most electronegative element yet have the highest electron affinity?

From Wikipedia: It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity on the Pauling scale, ...
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Is the magnitude of ionisation enthalpy and ionisation energy is same?

In my textbook it is written that ionisation energy and ionisation enthalpy are two different quantities. ionisation energy is the amount of energy provided to extract an electron from the outermost ...
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Regarding comparison of ionization energies [closed]

Why is the ionization energy of $\ce{Mg^2+}$ greater than the ionization energy of $\ce{Ne}$ (neon)? My teacher said the answer was $\ce{Mg^2+}$ but I have no idea why as my general knowledge tells ...
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Why does boron have a lower affinity than oxygen? [closed]

Electron affinity of oxygen is 141 kJ/mol and electron affinity of boron is 27 kJ/mol. I suspect it is because boron nucleus is much better shielded than oxygen nucleus (in the p-shell), but I am not ...
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Why energy is released when an electron is added to a neutral atom? [duplicate]

Question : Why energy is released when an electron is added to a neutral atom? I read somewhere “When electrons are added to an atom, the increased negative charge puts stress on the electrons ...
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Why it the electron affinity of beryllium is greater than nitrogen? [closed]

As we know that fully filled electronic configuration is more stable than half filled electronic configuration, so in my opinion beryllium's electron affinity should be less than nitrogen's. Is my ...
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When is the process exothermic and when is it endothermic? [closed]

When electrons are being added/removed from atoms or ions how can I tell if the process is exothermic or endothermic? For example in the question below, how could I tell for sure which of the ...

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