Magnesium Oxide(MgO) is the most chemically active element. Its atomic number is 12, placed in 2nd group 2 and 3rd period in the modern periodic table.
Formation Magnesium oxide (MgO) by the transfer of electrons
When magnesium reacts with oxygen, the magnesium atom transfers its two outermost electrons to an oxygen atom. By losing two electrons, the magnesium atoms form a magnesium ion (Mg2+) and by gaining two electrons, the oxygen atom forms an oxide ion (O2-).
Electron Dot Structure For The Formation Of Magnesium Oxide