The evidence has to be proven to be true
Because Na has one too many electron to be stable, while Mg has 2. once they loose those electrons, they will be come ion. loosing one electron will give the ion a 1+ charge, and loosing 2 will create a 2+ charge
2. Ridge
A ridge is the only option that forms when plates move apart. The other options happen when the plates collide.
The structure is quite simple actually. Only 1 carbon that has a single bond with one hydrogen atom, an OH-group and a double bond with an oxygen atom. H-COOH
