Sodium amalgam is a common reducing agent in organic synthesis, and it is also used in high-pressure sodium lamps. Mercuric chloride is obtained by the action of chlorine on mercury or on mercury I chloride. Begin typing your search term above and press enter to search.
Press ESC to cancel. Ben Davis January 7, Is PCl3 covalent or ionic? Does PCl3 contain ionic bonds? Why pbcl2 is ionic? Is of2 ionic? Is CBr4 ionic? Which is more ionic PbCl4 or PbCl2? What PbCl4 called? Updated On: Share This Video Whatsapp. Text Solution. Markownikoff's ruleFajan 's ruleSatytzeff's ruleHyperconjugation Answer :.
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My point is, if we don't think of the inert pair effect, we are generalising this, and moreover, high ionisation energies of lead should be explained by the inert pair effect.
As a side note, I would like to add that my teacher pointed out that the inert pair effect is an outdated concept. Is it so? If yes, why is it rejected? The inert pair effect would give an explanation about why it is difficult to reach that oxidation state, and why it has high tendency to get reduced, but there is no need to require to this concept to explain the covalent character of the compound.
Regarding your last question, I do not see why the inner pair concept should be rejected. Is just another model that can explain in a simple way properties or behaviors of certain elements. There are better models and orbital calcualtions that can also do the job? Of course, but that is no reason for avoiding the use of the model.
Answer: BeCl2. This is due to the electronegativities of the atoms involved in the bond. We know that a bond is of "high covalent character" when electronegativities are most similar in value. Pbcl4 is more covalent then pbcl2 because the size of state of pbcl2 is larger then pbcl4. Smaller the size of cation more is its polirizing power. And more covalent is the compound. However, in its properties it behaves as if it was essentially ionic. PbCl4 decomposes to give PbCl2 and chlorine at room temperature.
PbCl2 : A white solid which doesn't seem to dissolve in cold water although a little will , but dissolves in hot water to give a colourless solution. According to Fajan's rule, greater the charge on the cation, more is its ability to polarize the bonding electrons towards itself giving the compound a higher covalent character.
Which is more stable pbcl2 or pbf2? Pbcl2 is more reactive than pbf2 since the composition will depend on the density, temperature, durability, thermal expansion and optimal work. In Pbcl2, the temperature is low as compared to pbf2 in which density, as well as temperature, is high.
Even in term of thermal expansion, pbcl2 is high than pbf2.
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