Why the átomo never seen

Why the átomo never seen before
1. 1 answer
2. asked by Lucy
3. 356 views
1. Circuito completo.5. Mover carga eléctrica de átomos con electrones extra a átomos a los que les faltan electrones. 7.
1. 1 answer
2. asked by .
3. 51 views