Magnesium has 2 valence electrons, and oxygen has 6 valence electrons. Which type of bonding is likely to occur between a magnesium atom and an oxygen atom?

Question

nechirwan · Answer

Magnesium will give its two valence electrons to oxygen and it will have a charge of 2+(positive). It will also complete its octet, getting balanced. 
Oxygen will take two electrons from magnesium getting a charge of 2-(negative). It will also complete its octet. 

When making the formula, the two charges will cancel out each other giving the formula MgO. 

It is an ionic bond.

nechirwan · Answer

dont remember the metal :D