For 10 points, name this metal with symbol Mg.
Eclampsia is treated with this element's sulfate, and the bioluminescence reaction in fireflies utilizes ions of this element. Liquid titanium tetrachloride is dropped on this element's molten form to make metallic titanium in the Kroll process. Its blockage of NMDA receptors allows for sodium and potassium ion flux in cells, and this element is commonly found in certain chemical reagents existing in a Schlenck equilibrium. In its divalent cationic form, it acts to stabilize the grooves of DNA, and its sulfate form is also known as Epsom salt. This cation is also found coordinated to the porphyrin ring of chlorophyll. For 10 points, name this metal with symbol Mg.
Eclampsia is treated with this element's sulfate, and the bioluminescence reaction in fireflies utilizes ions of this element.
magnesium [or Mg before mentioned]