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UPSEE Solved Model Paper 1
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© examsnet.com
Question : 52
Total: 150
E represents an element belonging to carbon family.
E +
2
X
2
→
E
X
4
(X = F,Cl,Br,I)
Stability of
E
X
4
decreases down the 14th group
PbI4 does not exist
Ge and Pb form
E
X
2
as well
All are correct
Validate
Solution:
Stability of
E
X
4
decreases down the 14th group because of the inert pair effect. Lead (IV) iodide is not known yet probably because of the oxidizing nature of
P
b
4
+
and the reducing nature of
I
−
. Ge and Pb definitely form
E
X
2
.
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