Evaluate the two proposed answers. Which are supported? I. Atoms of different elements with equal mass number — the appropriate term: Neutralisation. II. Loss of electrons by a species — the appropriate term: Oxidation.
Correct answer: D
I is incorrect: Atoms of different elements with equal mass number → Isobars. They share total nucleon number but not proton number. II is correct: Loss of electrons by a species → Oxidation. Electron loss increases oxidation state.