What element has the symbol 'Al'?

The story behind the answer

Al is the chemical symbol for Aluminum, a lightweight, silvery metal. The other options have different symbols: Argon is Ar, Gold is Au (from Latin aurum), and Silicon is Si. So, “Al” uniquely points to Aluminum.

Fun fact: Aluminum is the most abundant metal in Earth’s crust and is prized for being light, corrosion-resistant, and recyclable—think foil, cans, and aircraft. Historically, British English kept the name “aluminium,” but the symbol stayed Al. Memory tip: “Al” is right at the start of ALuminum—match the first two letters to lock it in.