Answer:
B the attraction of metal ions to mobile electrons
Explanation:
Metal bonding occurs when metals are combined with each other. Metal atoms need to give up electrons to reach the configuration of a noble gas. In this case, the metals lose the valence electrons and an electron cloud (also called electron sea) is formed between the positive nuclei
Metals tend to lose the electrons of the last level forming positive ions. When ions are grouped neatly forming a network that is surrounded by the cloud of ceded electrons and a metallic bond is formed
Therefore the correct answer is the B the attraction of metal ions to mobile electrons
