Question

In reactions between metals, and gases, which is likely to be the oxidizing agent?

Answer 1

The non-metal is likely to be the oxidizing agent.

Explanation:

Oxidants accept electrons; dioxygen gas gives `O^(2-)` when it oxidizes something, i.e. accepts electrons. A reducing agent donates electrons.

Given this, elemental metals tend to be reducing agents, and oxidants tend to be non-metals. `Cl_2` gas is thus the most potent oxidant, as it accepts electrons to give chloride ions, `Cl^-`.