Which half-equation shows reduction?

Answer and explanation

Correct answer: D.

  1. Step 1: Reduction is gain of electrons, so electrons appear on the left-hand side.
  2. Step 2: Only has electrons on the left.
Answer
.
Why not the others: : shows electrons being lost, which is oxidation. : shows electrons being lost, which is oxidation. : shows electrons being lost, which is oxidation.

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