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Question
Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid-state?
Options
\[\ce{Ag2SO4}\]
\[\ce{CuF2}\]
\[\ce{ZnF2}\]
\[\ce{Cu2Cl2}\]
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Solution
\[\ce{CuF2}\]
Explanation:
\[\ce{Cu^{2+}}\] has 1 unpaired electron in \[\ce{CuF2}\], hence, it is coloured in solid state.
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