Which of the following statements is incorrect? (a) Mercurous ion exists as \( \mathrm{Hg}^{+} \...

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Which of the following statements is incorrect?
(a) Mercurous ion exists as \( \mathrm{Hg}^{+} \)
\( P \)
(b) Mercurous ion is diamagnetic and exists as dimer \( \mathrm{Hg}_{2}^{2+} \)
W
(c) Mercurous ion is colourless
(d) There is a metallic bond between two \( \mathrm{Hg}^{+} \)ions
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