NEET Chemistry Oxidation Number Match the Following Question
Match Column-I with Column-II.
Column-I Column-II (a) Cr in Cr2O7^2– (i) +4 (b) S in SO3^2– (ii) +6 (c) Cr in Cr3+ (iii) +3 (d) S in SO4^2– (iv) +2
Choose the correct matching:
a-ii, b-i, c-iii, d-iv
a-i, b-ii, c-iii, d-iv
a-ii, b-iii, c-iv, d-i
a-iv, b-ii, c-iii, d-i
Correct Answer
Detailed Explanation
In the dichromate ion (Cr2O7^2–), chromium has an oxidation number of +6, and in Cr3+, it is +3. Sulphur in the sulphite ion (SO3^2–) is +4, and in the sulphate ion (SO4^2–), it is +6. Thus, the correct matching is a-ii, b-i, c-iii, d-iv.
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