Magnesium is the full name of a metal. Unsure what you are looking for.
MgS2O3 is magnesium thiosulfate; It's a ternary compound, a metal bonded with a polyatomic ion. The metal has a fixed cation. List the cation-- magnesium-- and find the name of the polyatomic ion. S2O3 is thiosulfate, so the full name would be: Magnesium Thiosulfate.
The full name for Mg²⁺ is magnesium ion, while SO₄²⁻ is called the sulfate ion. When combined, they form magnesium sulfate, which is commonly used in various applications, including agriculture and medicine.
Mg or "magnesium"
The name of Magnesium comes from a Greek District in Thessaly
Magnesium derives from name from the Magnesia region of Ancient Greece in which it was found. The full story is a little more complex than that, but that's the essence of it.
Magnesium Oxide
Magnesium(I) Nitride is the name of Mg3N.
Magnesium Biarsenate... Or.... Magnesium hydrogen Arsenate
The name is diphosphate of trimagnesium.
Magnesium Crystal
The name is magnesium sulfide (MgS).
Magnesium bromide