Mg is the symbol for the element magnesium and could be used to represent a neutral atom of magnesium. Mg2- does not occur, but Mg2+ does, and is the symbol of a magnesium ion, which is a magnesium atom that has lost two electrons.
Mg2+
Mg, magnesium forms compounds containing Mg2+ ion.
Half equations ?? The chemical formula of magnesium oxide is MgO.
The mass number of Mg2 is 24, as magnesium (Mg) has an atomic number of 12 and Mg2 indicates the presence of two magnesium atoms, whose masses add up to 24.
The ion symbol for magnesium is Mg2+ as it loses 2 electrons to achieve a stable electron configuration.
Cu + Mg2 --------> Cu2 + Mg Cu --------------> Cu2 + 2e Mg2 + 2e --------> Mg Cu --------------> Cu2 + 2e (E = +0.35) Mg2 + 2e --------> Mg (E = -2.36V) +0.35 + (-2.36) = -2.01V --------------------------------------… Mg + Cu2 --------> Mg2 + Cu Mg --------------> Mg2 + 2e Cu2 + 2e --------> Cu Mg --------------> Mg2 + 2e (E = +2.36V) Cu2 + 2e --------> Mg (E = -0.35V) +2.36 + (-0.35) = +2.01V
what is the difference between mg and mgl
The difference is 2.5 mg
2H3O+ + Mg → Mg2+ +H2 + 2H2O
Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-
Mg2+
Ionic- the difference in electronegativity is high (Mg 1.31, Cl 3.16)
Mg(OH)2,solid --- in water---> Mg2+aq + 2 OH-aq
The net ionic equation for the reaction between hydrochloric acid (HCl) and magnesium (Mg) is: 2H⁺ + Mg(s) -> Mg²⁺ + H₂(g)
The ionic charge on "Mg2", presumably meaning the cation whose formula is Mg+2, is +2. In the unlikely event that "Mg2" means a diatomic molecule of elemental magnesium, the ionic charge would be 0,
Ionic bond: Mg2+ + 2 F- --> MgF2
Mg2+