Covalent bond , hopefully this help :) explanation : .....
I believe it was decomposition reaction
It forms Carbon monoxide.
CO2 +O2⇒ CO
(Sorry not balanced)
Answer:
This means that the metal is more properly viewed as an array of positive ions surrounded by a “sea of mobile valence electrons.” Electrons which are capable of moving freely throughout the empty orbitals of the metallic crystal are called delocalized electrons (Figure below).