All Questions
11 questions
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Compare the covalent character of ZnCl2, CdCl2,HgCl2
I want to know how to arrange the covalent character of ZnCl2, CdCl2, and HgCl2.
By Fajans' rules, We know that a smaller cation equals higher covalent character.
We also know that atomic size ...
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-2
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2
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Why are group 13 compounds in the +1 oxidation state more ionic than those in the +3 oxidation state?
I know that for group 13 metals in the p block, the stability of +1 OS is generally more than the stability of +3 OS as it is energetically not favourable to attain the higher OS of +3 and such ions ...
user120098
1
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1
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Identifying covalent character in ionic compounds when varying multiple ions
By Fajans' rules, we can easily find out which compound shows covalent character.
Example: Among $\ce{NaCl}$, $\ce{MgCl2}$, $\ce{AlCl3}$ which one is more covalent?
Answer: There is a point in ...
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12
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3
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8k
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Effect of noble gas configuration on polarising power
I don't understand this statement written in my textbook about the polarising power of cations:
If two cations have the same size and charge, then the one with pseudo noble gas configuration ( with ...
4
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0
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What type of bonding is present in lithium tetrahydridoaluminate?
I can tell that the negative ion has one bond which is a co-ordinate/dative covalent bond.
However, overall, would you say that lithium tetrahydridoaluminate (lithium aluminium hydride) is ionic? If ...
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11
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3
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Is potassium bifluoride an ionic or a covalent compound?
The statement below is an excerpt from my textbook (Chemistry Part II, Textbook for Class XII by NCERT, ed. January 2014):
Because of the tendency of fluorine to form hydrogen bond, metal fluorides ...
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16
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1
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Why do different elements form different types of carbides?
What property of the elements make them form different types of carbides like:
$\ce{Be}$ and $\ce{Al}$ - $\ce{Be2C}$ and $\ce{Al4C3}$ (Methanides) contains $\ce{C^4-}$ ion
$\ce{Na}$ and $\ce{Ca}$ - $...
- 26.8k
7
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1
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Is the bond in HF ionic while it is covalent in HCl?
Why would a hydrogen atom "donate" to fluorine in an ionic bond but not in $\ce{HCl}$? Why would $\ce{H}$ and chlorine share instead of $\ce{Cl}$ just stripping it away like $\ce{F}$ does?
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8
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3
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The Crisscross method for finding the chemical formula
I am reading this wikipedia article that I don't understand. What I don't understand is:
suppose we have two elements $X$ and $Y$ having oxidation numbers $x$ and $y$ respectively. Can we prove ...
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2
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1
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How would one compare the magnitude of covalent character between SnCl4 and SnF2 using Fajan's Rules?
It is easy to compare two ionic compounds when one of the ions is same. However, how do we compare two compounds if one of the ions is the same element but just has different charge and the other ion ...
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10
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3
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Why do ionic compounds dissociate whereas coordinate complexes won't?
An ionic bond is the bonding between a non-metal and a metal, that occurs when charged atoms (ions) attract after one loses one or more of its electrons,and gives it to the other molecule, for example ...
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