STANDARDChemistry-Oxidation and Reduction
STANDARD Chemistry Oxidation States MCQ Question
Type: MCQ-conceptual-Medium
Oxidation numbers of Mn in its compounds MnCl₂, MnOH₃, MnO₂ and KMnO₄ respectively are
A
+2, +4, +7, +3
B
+2, +3, +4, +7
C
+7, +3, +2, +4
D
+7, +4, +3, +2
Correct Answer
Option B
Detailed Explanation
MnCl₂ → x + (-2) = 0 ⇒ x = +2 Mn(OH)₃ → x + (-3) = 0 ⇒ x = +3 MnO₂ → x + (-4) = 0 ⇒ x = +4 KMnO₄ → +1 + x + (-8) = 0 ⇒ x = +7
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