Question

difference between free state and combined metals

Answer 1

the elements or metals which are freely available, which does not react or not in the form of compound is known as free state. Here the atom is all alone and neutral

and the elements or metals which are not freely available, found with some other element as they are more reactive metals is known as combined state. Here the atoms are usually not neutral and generally forms ions. 

Answer 2

Free state: A few metals occur native or free in the earth. Gold, platinum and silver are some of the metals occurring in the free state. They have low chemical reactivity and are not affected by the action of the chemicals or atmospheric conditions. These are the metals at the bottom of activity series.

(ii) Combined state: The metals having appreciable reactivity are found in the combined state. They occur as oxides, halides, sulphides, phosphates, silicates etc. The highly electropositive elements (Na, K, Mg, etc.) are found as compounds of highly electronegative elements (chlorine, oxygen etc.). Weakly electropositive (Fe, Cu) metals are found in combination with weakly electronegative elements (sulphur). Many metal ores are found as oxides. This is because oxygen is very reactive and very abundant on earth.

hope it helps you