Describe the nature of metallic bonds every atom has a negative charge because there are extra electrons in the metal. every atom has a negative charge because there are extra electrons in the metal. the atoms of the same element form both negative and positive ions when electrons are transferred. the atoms of the same element form both negative and positive ions when electrons are transferred. the atoms are bound together due to transfer of protons rather than transfer of electrons. the atoms are bound together due to transfer of protons rather than transfer of electrons. electrons are not bound to a particular ion but instead move freely through the substance.