P-BLOCK Basic Questions

Perhydrol is toh hydrogen peroxide.

H₂O₂ is sold under the commercial name perhydrol.

ya..i know its related to H₂O₂..but there is some relation based on molarity or something ? [ like volume strength ]

Mordant, I think is a colouring material........yeah, it is a dye. A complex compound.

5. Nitrogen does catenate but to a lesser extent. We've discussed this one before js. An example of nitrogen catenation is N₂. But the lack of d-orbitals gives phosphorus the top spot for catenation in group 15.

4. A mordant is something used to dye fabrics such that a complex is formed which attaches to the fabric. It is a metal ion(polyvalent). The complex so formed is colloidal in nature.

Yeah, it is 10V. It means 3% H₂O₂

Thanks guys but 3 important QUESTIONS are left..pls try to reply to them also..

1. What exactly is meant by BACK BONDING ?

3. PBr₄ and PI₄ doesnot exist according to my theory book and reason given is that Pb⁴⁺ is a strong oxidant and Br^- and I^- are strong reductants [ and so Pb⁴⁺ cant exist for long ] ..which is TRUE..but then what about PF₄ and PCl₄ ???

6. Explain the following trend in THERMAL STABILITY AND ACIDIC CHARACTER :

HCl0₃ > HBr0₃ > HI0₃ ?

For back bonding one, this might be of some use

http://bama.ua.edu/~kshaughn/ch609/notes/1-structure-bonding.pdf

I found this one tuff!!

1 reason for the 3rd qsn maybe is that Bromine and Iodine are larger in size compared to Fluorine and Chlorine.

So sterically PBr₄ and PI₄ are unstable.

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ya Soumik..but how can figure out the other two compounds of F an Cl as they have so much reducing power..?...[12]

Thanks Ray..it really helped me..! [1]