Magnesium(?)
<span>2 HCl + Mg ? MgCl2 + H2</span>
Answer:
Beryllium has an electronic configuration of 1s2 2s2 in its natural state. When in an ion state of Be2+ it loses the electrons in a 2s shell and has a configuration of 1s2. This means that Be2+ has 2 electrons.
To balance this equation simply place the coefficient 2 in front of both the iron metal and the iron II oxide FeO.
