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Law and Politics / Re: John Walker Lindh is an American citizen who was captured by the Northern Alliance on the ...
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Education / Re: The main focus of the very earliest research on children was:
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Education / Re: Liam is nine months old and beginning to scoot around on the carpet. His two favorite toys, a ba
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Education / Re: Lauren and Philip are both playing with blocks. Lauren asks Philip to pass her a blue block but
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Education / Re: Prior to school beginning Mr. Biggs asks parents to share their beliefs about ________ in order
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Chemistry / What is the difference between a weak-field complex and a strong-field complex?
« Last post by potomatos on Nov 18, 2019 »Answer 1
A covalent bond is formed through the sharing of a pair of electrons, typically one electron from each atom in the bond. A coordinate covalent bond in a coordination complex forms when one atom from a ligand donates a pair of electrons into an empty orbital of the other atom, usually a metal.Answer 2
The type of ligand attached to the central atom in a complex ion determines how the degenerate d-orbital energies will be split. In a weak-field complex, the d orbitals split with a small energy difference. In a strong-field complex, the d orbitals split with a large energy difference. The spectrochemical series describes an ordered list of strong-field to weak-field ligands. The energy required for electronic transitions between the split d orbitals determines the wavelength of light absorbed by the complex.7
Chemistry / What is the difference between a weak-field complex and a strong-field complex?
« Last post by itsmyluck on Nov 18, 2019 »Question 1
What is a coordinate covalent bond?Question 2
What is the difference between a weak-field complex and a strong-field complex?8
Chemistry / Why is +2 a common oxidation state for transition elements?
« Last post by jgranad15 on Nov 18, 2019 »Answer 1
a low-spin octahedral Co3+ complexAnswer 2
The transition metals lose their outer s electrons before losing any of their d electrons. Since the outer s orbital holds two electrons, the loss of these electrons when forming an ion results in a +2 oxidation state.9
Chemistry / Why is +2 a common oxidation state for transition elements?
« Last post by mpobi80 on Nov 18, 2019 »Question 1
Which of the following species is diamagnetic?◦ an isolated gas-phase Cu2+ ion
◦ a high-spin octahedral Cr2+ complex
◦ an isolated gas-phase Cr3+ ion
◦ a low-spin octahedral Co3+ complex
Question 2
Why is +2 a common oxidation state for transition elements?10
Chemistry / Which ion would you expect to have the largest crystal field splitting, ?
« Last post by babybsemail on Nov 18, 2019 »Answer 1
H2NCH2CO2-Answer 2
[Rh(CN)6]3-