Which of the following compounds is expected to be coloured
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a
Ag2SO4
b
CuF2
c
MgF2
d
CuCl
answer is B.
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Detailed Solution
The electronic configurations of cations in the given salts are Ag+4d10,Cu2+3d9,Mg2+2s2,2p6,Cu+3d10Only Cu2+ on has one unpaired electron in 3d orbital. Hence, its salt is expected to be coloured