Protons have a ___________ charge., positive, negative, neutral , Protons and neutrons are tightly bound in a a tiny ______________., electron cloud, nucleus, circle, Electrons have a _______________ charge., positive , negative, neutral , The nucleus is located in the ______________ of the atom with the electrons on the outside.  , front , back , center, ___________ has a neutral charge. , protons, electrons, neutrons, The smallest particle of an element ____________., atom, DNA, molecule, The identify of an element in the periodic table is determined by the number of, protons, neutrons, electrons, What is responsible for giving the elements their unique properties?, the protons, neutrons and electrons that make it up., the location in the periodic table, whether it is a metal or nonmetal, the size of the element.

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