Why do ionic bonds tend to form between metals and nonmetals?
Answers:
Metals tend to lose electrons and become positive ions.
Non-metals tend to gain electrons and become negative ions.
Positive and negative attract.
Because that is to say the easiest way for them to have a stable configuration. metals usually hold a small number of electrons in their outer shell, which they are predisposed to give up. Eg. group 1 metals, such as sodium, have just one electron in their outer (valence) shell and if it loses that electron it will have a stable configuration ie. sodium will stir from 2, 8, 1 to 2, 8. While non-metals only require a few electrons to fill their outer shell, eg. the halogens, chlorine, fluorine, bromine, etc. adjectives need one electron to have spread their outer shell. So if sodium and chlorine reacts, sodium will give up its electron to chlorine hence a ionic bond. Source(s): college chem
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