Considering the element with atomic number 4 and atomic number 9 on the periodic table. Give the reason(s)/cause(s) for these elements to be different in 1) reactivity, 2) forming ions, and charges of these ions

Ithink it’s one of those things that you put the object on

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).