All Questions
Tagged with electrons ionization-energy
17
questions
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138
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Mg2+ ion formation [duplicate]
Why does Mg not form a Mg+1 ion, even though its second ionization energy is much higher than the first ionization energy?
(I know that an ion should resemble the noble gas closest to the element from ...
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1
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3
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146
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Comparing Succesive Ionisation Energies
I am trying to understand successive ionisation energies. In particular, an explanation for why the second ionisation energy is greater than the first ionisation energy. I'm looking for a clear and ...
3
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2
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245
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Why is orbital energy not the mean between ionization energy and electron affinity when the orbital has two electrons?
In this question it is asked why ferrocene is colored when the HOMO-LUMO gap seems to be beyond the visible light range. I tried to answer that orbital energies change with electronic transitions and ...
- 60k
-3
votes
1
answer
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Confusion regarding 1st and 2nd electron gain enthalpy
$\ce{O}$ has the 1st electron gain enthalpy $\pu{-141 kJ mol-1}$. $-ve$ value implies that energy is released when electron is added to an isolated atom. This also means that if $\pu{141 kJ}$ energy ...
- 161
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1
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336
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How to calculate ionization energy of an atom provided energy of the electron at ground state? [closed]
It is given that in ground state the energy of electron in hydrogen atom is $-2.18\times10^{-18}\mathrm{J}$. I'm required to calculate the Ionization Energy in kJ/mol
Question for reference:
At ...
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1
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999
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Why is the first energy of ionization of oxygen lesser than that of nitrogen? [duplicate]
The following question arises from a question I found in my book.
Experimentally it has been determined that the value of the first
energy of ionization of oxygen is lesser than the first energy ...
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0
answers
19
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Electron shells and subshells energies [duplicate]
According to what i learned in university, the energy of orbitals increases when the principal quantum number n increases. Also, in a given shell, s orbitals have lower energy than p orbitals which ...
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3
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1
answer
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Can visible light or infrared radiation excite electrons?
So the limit of ionizing radiation seems to be UV light.
I'm wondering if IR light or Visible light can excite the electrons in an atom.
It has to do with the difference in energy level right?
So ...
- 169
4
votes
1
answer
1k
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Volume of orbitals
As I was learning about atomic structure, the lecturer made a seemingly dubious claim:
The volume of a p orbital is one-third that of the s orbital. Thus, inter-electronic repulsions are ...
- 10.7k
5
votes
2
answers
15k
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Does electron shielding increase or stay constant moving LEFT to RIGHT across a period?
Does electron shielding increase or stay constant moving left to right across a period?
I have read about both, and I just want to know which one is right.
I believe that electron shielding remains ...
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4
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13k
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If fluorine has a lower electron affinity than chlorine, why does it have a higher ionization energy?
I have read that fluorine has a lower electron affinity than chlorine despite its lower atomic radius because its electron cloud is extremely dense. If this is the case, shouldn't the ionization ...
user28295
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163
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Relationship between ionization energy and orbitals [duplicate]
My chemistry book says that the ionization energy depends on the orbital an electron is taken from?
I'm not sure I understand what it means. Could someone please explain this?
- 2,331
1
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1
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383
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Why does ionization increase from Li to Be? [duplicate]
If ionization energy decreases from $\ce{N}$ to $\ce{O}$ due to the pairing of electrons (causing electric repulsion and greater potential energy) in the $\mathrm{2p}$ orbital in the $\ce{O}$ atom, ...
- 1,529
1
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590
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How much energy is required to make an ion?
So say that I have a normal hydrogen atom (not an isotope, just regular normal hydrogen atom) and I want to make it into an ion $\text{H}^+$. Since to make an ion of that formula I need to take away ...
- 1,441
2
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363
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Why does the definition of ionisation energy only include gaseous atoms? [duplicate]
I know that in physics there is thermionic emission and the photoelectric effect. These are both method of removing electrons. I think these affects are only for metals due to their de-localized ...
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