AP BIOLOGY

Detailed explanation-1: -Metals form positive ions because metals are very electropositive, and their outer electrons are very loosely bunded on them. so, that they lose electrons and gain a positive charge and hence from positive ions.

Detailed explanation-2: -Generally, when metals react with non-metals, electrons are transferred from the metals to the non-metals. The metals form positively-charged ions and the non-metals form negatively-charged ions.

Detailed explanation-3: -As mentioned above, the characteristic chemical property of a metal atom is to lose one or more of its electrons to form a positive ion. However, certain metals lose electrons much more readily than others. In particular, cesium (Cs) can give up its valence electron more easily than can lithium (Li).