The period 4 elements gallium (Ga), germanium (Ge), arsenic (As) and selenium (Se) lie directly below aluminium, silicon, phosphorus and sulfur in the Periodic Table. Each period 4 element has properties similar to the period 3 element above it. Which of the period 4 elements produce oxides that dissolve in water to form an acid solution?
- AAs and Se
- BGa and Ge
- CGa and Se
- DSe only