Which of the following pairs of elements are likely to form an ionic compound? Check all that apply. Check all that apply. sodium and neon nitrogen and fluorine cesium and magnesium lithium and chlorine oxygen and bromine potassium and oxygen

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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).