Answer: Within each element square, information on the element's symbol, atomic number, atomic mass, electronegativity, electron configuration, and valence numbers can be found. At the bottom of the periodic table is a two row block of elements that contain the lanthanoids and actinides.
2MgO This is called redox reaction. Oxygen is the oxidizing agent to receive 2 electrons from Mg. Mg is the reducing agent to give 2 electrons to O. Mg becomes Mg2+ and O becomes O2-. These 2 ions form an ionic structure called MgO
