🩺 NEET🧪 Chemistry

The incorrect oxidation number of the underlined atom in the following species is [Re-NEET 2020]

Q1

The incorrect oxidation number of the underlined atom in the following species is

[Re-NEET 2020]

a

\(\underset{¯}{Cl}{O}_{3}^{-}\)is +5

b

\({K}_{2}{\underset{¯}{Cr}}_{2}{O}_{7}\) is +6

c

\(H\underset{¯}{Au}C{l}_{4}\) is +3

d

\(C{u}_{2}\underset{¯}{O}\) is -1

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