Question

The number of moles of electrons needed to produce one mole of Mg metal from MgCl2?

A) 1 B) 2 C) 3 D) 4 E) 5

Answer 1

The number of moles of electrons needed to produce one mole of Mg metal from MgCl2 is: B.2
Magnesium belongs to Alkaline earth metals groups which located on the second column within the periodic tables. This group have 2+ ions and need 2 electrons in order to produce one mole of metal.