11The answer should be e)
AgCl is col-less while AgI is yellow. ... coz..
a) there's d-d transition in AgI but not in AgCl.
b) the polarisability of Cl is less , covalent contributiob is less , so it is white.
c) col of AgI is coz of transfre of electron esaily from I- to 4d orbital of Ag+ as oxidation of I- is easy than Cl-.
d)none of these..
e) the stat given is wrong so no reason [9]
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31 Answers
1Perhaps, u guyz hv forgotten that colour in transition metals is also due to presenc of covalent character.
Any compound having more than 20% covalent character is coloured.
In AgI, colour arises becoz Ag+ ions polarize the halide ions. This means dat it shifts the electron cloud implying greater covalent character. The polarisability of ions increase wid size , thus I- is most polarised.
So, clearly answer is 'b'.
this also clarifies dat all Ag+ ions are not coloured.e.g. AgBr, AgI ,Ag2O etc.
finally, this thread terminates.
11Atleast this statement is right. (dunno the reason)
Please someome should complete this ...........[2]
1heheh :D
haan yeh bhi sahi reason hai ... the bigger.. the more powerful :P
1abhisheks:
k
a
amrita
nahi hai :P
abhisheks.post
c
amrita
woh toh main kii thi
woh bhi nahi hai
-1 ho gaya :(
abhisheks:
uff
tab e
yaa b
hai kya
kya hai
amrita
hehheheh :D
B hai
baki toh b hi tha :P
abhisheks:
b
:O
aisa kaise
galat hoga answer
wo bhi koi reason hai
amrita
mujhe bhi wahi laga
c is very likely answer isnt it ?
abhisheks:
haan