Match the oxidation number of the underlined element in Column I with the value(s) in Column II.
Column I
Column II
A) N̲H₄NO₃
P) 0
B) C̲H₂O̲
Q) -2
C) Ni(C̲O̲)₄
R) +2
D) C̲l₂O̲₅
S) +5

T) -3

Question

Match the oxidation number of the underlined element in Column I with the value(s) in Column II.

Column I	Column II
A) N̲H₄NO₃	P) 0
B) C̲H₂O̲	Q) -2
C) Ni(C̲O̲)₄	R) +2
D) C̲l₂O̲₅	S) +5
	T) -3

TestHub · Accepted Answer

(A) NH₄NO₃ contains N in two environments: in NH₄⁺, x + 4 = +1 gives N = -3 (T); in NO₃⁻, x - 6 = -1 gives N = +5 (S). (B) In CH₂O (formaldehyde): C: x + 2 - 2 = 0 gives C = 0 (P); O = -2 (Q). (C) In Ni(CO)₄, CO is a neutral ligand: Ni = 0 (P); within CO, O = -2 (Q) and C = +2 (R). (D) In Cl₂O₅: 2x - 10 = 0 gives Cl = +5 (S); O = -2 (Q).

Chemistry - Redox Reactions Question with Solution | TestHub

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