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Chandan Panigrahi posted an Question
October 20, 2020 • 05:09 am
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30 points
30 points
- IIT JAM
- Chemistry (CY)
. arrange the following in decreasing order of covalent characters hgcl, bacl, zncl, srcl, cdcl,, cacl
Arrange the following in decreasing order of covalent characters HgCl, BaCl, ZnCl, SrCl, CdCl,, CaCl
2 Answer(s)
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Dinesh khalmaniya 1
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we can apply fajan’s rule.. Which states “cation with smaller size and greater charge and anion with larger size and less charge has more polarizing power” So a more covalent compound is formed with smaller cation and largerer anion. so in the case of Ca2+ ,Sr2+ and Ba2+ the covalent character is Ca2+ > Sr2+>Ba2+ but in the case of Zn2+ ,Cd2+, Hg2+ order will be reversed as HgCl2> CdCl2>ZnCl2> CaCl2>SrCl2>BaCl2
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Zncl2
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tq sir😇
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Priyanshu kumar Best Answer
S block has less covalent character than d block elements overall order HgCl2>cdcl2>zncl2 for d block for s block cacl2>srcl2>bacl2 Explanation:- we can apply fajan’s rule.. Which states “cation with smaller size and greater charge and anion with larger size and less charge has more polarizing power” So a more covalent compound is formed with smaller cation and larger anion.
so order becomes hgcl2>cdcl2>zncl2> cacl2>srcl2>bacl2
please ask dear chandan if you have any doubt in this
sir hg is bigger in size than cd than how hg is more showing covelent cherecter than cd
see the attached image....here effective nuclear charge dominates
as polarising power is inversly prop to size of cation
yes but here due to diffused shape very low shielding is possible to down the grp polarising power and hence covalent character increases
This is the order where fajans rule is less dominant
tqq sir😇
you're welcome 😊👍
sir than is this answer wrong
yes chandan
okk sir
sir one more help plss
yes tell
sir i am not understanding anything in stereo chemistry part of this book can pls tell me any book or youtube chennal which helps me
ps kalsi stereochemistry book is best...
is that book is for bsc level?
for jam and selected topic you can study from this book and watch j chemistry video but only that part which are there in syllabus
okk sir tqq 😇😇