All Questions
Tagged with periodic-trends orbitals
12
questions
1
vote
1
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62
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Atomic radius decreasing across a Periodic Table row - does the RPD of an orbital change depending of the element considered?
I have a concern regarding the RPD of an orbital. Does the RPD of an orbital depend on the $Z$ (i.e. on the element under consideration) ? Especially, can the RPD of an orbital "shrink" to ...
- 257
0
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0
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41
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Do the paired electrons of subshells' degenerate orbitals contribute to the total exchange energy?
For instance, in d7, there are 5 electrons with the same spin, and 2 electron with the opposite spin, meaning that there are only 3 unpaired electrons. So, which of these would be correct?
(i) Total ...
0
votes
2
answers
117
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Is the periodic table ordered by bonded atoms and does that change the electron configurations and ordering? [closed]
In my book (Mortimer, The Basic Knowledge of Chemistry) the electron structure of the elements is introduced, there the relative energies of the atomic orbitals are shown:
1s < 2s < 2p < 3s &...
- 369
11
votes
2
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10k
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Exchange energy of d6 configuration
In NCERT Chemistry book, it is given as:
Exchange energy is responsible for the stabilization of energy state. Exchange energy is approximately proportional to the total number of possible pairs of ...
user112344
2
votes
1
answer
878
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Effect of d-orbital electron shielding on atomic radius
In a standard book it is given:
"Atomic radius of Gallium is less than that of Aluminium. This can be understood from the variation in the inner core of the electronic configuration. The ...
user112344
0
votes
0
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70
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S(p)-C(p) vs. O(p)-C(p) overlap
In Grossman, The Art of Writing Reasonable Organic Reaction Mechanisms, he provides the following explanation. The question asks to explain why the difference in pKa values between PhSH and EtSH is ...
- 49
1
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1
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14k
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Rule to determine the total number of elements in a period [closed]
If each orbital can take maximum of 3 electrons, then total number of elements in 2nd and 4th periods respectively are = ?
I am not aware of the rule which helps to determine the total number of ...
- 56
5
votes
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136
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Relative orbital energies of Mn and Ni
In this MO diagram, why are the atomic Mn $3d$ orbitals higher in energy than the Ni $3d$ orbitals?
- 67
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7k
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Effect of effective nuclear charge increase on the stabilization of 2s and 2p orbitals
Are 2s or 2p orbitals more stabilized when going from left to right in the period? There are good arguments for both possible answers:
1) 2p orbitals are more stabilized because they penetrate less ...
- 14.4k
9
votes
2
answers
12k
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Periodic trend in difference of energy between the s and p orbitals
Why does the difference of energy between the 2s and 2p orbitals of the second period elements increase with increasing atomic number? Does this difference increases by moving down a group, e.g. is ...
- 14.4k
44
votes
3
answers
111k
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What is the inert pair effect?
I was reading about the p-block elements and found that the inert pair effect is mentioned everywhere in this topic. However, the book does not explain it very well. So, what is the inert pair effect? ...
- 577
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Have there been no advances in the determination of effective nuclear charges since Clementi and Raimondi in the 60s?
Effective nuclear charge is a very important concept in chemistry, and is the basis for the qualitative explanation of many observed chemical and physical properties, including several periodic trends....
