# Tagged Questions

The amount of energy released when an electron is added to a species in the gaseous phase to form a negative ion.

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### Why don't gases of elements with negative electron affinities exist as ions in nature?

Flourine has an electron affinity of about -300 kJ/mol. Lithium has an electron affinity of about 60 kJ/mol. As I understand it when $\ce{Li^-}$ loses an electron about 60 kJ/mol is released but when ...
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### Electronegativity and anion stability

If two similar sized atoms have different electronegativity values, the atom with higher electronegativity holds the electrons more tightly, and thus is more stable. Example: hydroxide vs azanide (NH2-...
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### 2nd Electron Affinity of halogens

I have seen questions regarding EA but they were all about the 1st EA so this question is not duplicate. I came across a statement which goes like "2nd EA of halogens is almost zero". How is this ...
43 views

### Using electron affinity to calculate lattice energy

I am trying to calculate the lattice energy of $\ce{CaBr2}$, I am uncertain of how to incorporate the electron affinity value provided for $\ce{Br2}$ into my calculation. Since electron affinity is ...
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### For group 7 elements, are anions a lower energy state than being neutral atoms?

Given that electron affinity is positive, why don't these atoms attract free electrons and "prefer" to exist as anions? Never made sense to me — I could be missing something obvious.
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### Electron affinity of Group 15 elements

The electron affinities of elements in the same group should decrease as you go down the group, but in the Group 15 elements the values generally increase: \begin{array}{cc} \hline \text{Element} &...
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### Can we add an electron to an atom?

Say that we have an atom which is inert, or stable. How would one go about adding one electron. Is it possible?
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### Ionization energy and Electron Affnity

Which of the following statements correctly interprets the relationship between ionization energy, atomic radius Electron affinity when comparing two atoms. The correct choice as per my instructor ...