What is the formula for the compound formed by aluminium and sulfur?

CHEMISTRY · Single correct · GCSE · Chemistry · Atomic Structure and the Periodic Table · Atomic Structure and the Periodic Table

Problem

What is the formula for the compound formed by aluminium and sulfur? (1)

\mathrm{AlS}

(2)

\mathrm{AlS_2}

(3)

\mathrm{AlS_3}

(4)

\mathrm{Al_2S_3}