14. Rumus kimia senyawa aluminium sulfida berikut ini adalah __ A. AIS D. Al_(2)S_(3) B. AlS_(2) E. Al_(3)S_(3) C. Al_(2)S_(2)

The correct answer is **D. **. Here's why:* **Aluminum (Al)** has a +3 charge when it forms an ion.* **Sulfur (S)** has a -2 charge when it forms an ion.To create a neutral compound, we need to balance the charges. The least common multiple of 3 and 2 is 6. Therefore:* We need two aluminum ions (2 x +3 = +6)* We need three sulfur ions (3 x -2 = -6)This gives us the formula ** **.