Question

The identity of an element is determined by (a) the mass of the atom (b) the number of electron orbits in the atom (c) the number of neutrons in the atom (d) the number of protons in the atom

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The correct answer is D. Elements are distinguished from one another by the number of their protons because each element contains a unique number of protons

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Nelson Science and Technology Perspectives 7: Pure Substances and Mixtures Module

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