metallic bonding is similar to ionic bonding because; in which substance does sharing of electrons between two atoms occur?; which of the following statements about ions is true?; what characteristic of metallic bonds cause metals to be shiny?; which statement about metals is true?; what characteristic of metallic bonds allows metals to be malleable and ductile?; in the compound mgcl2, the subscript 2 indicates that; the elements most likely to form more than one type of ion are the