223 Rn 86 Express your answers as integers. Enter your answers separated by a comma. ►View Available Hint(s) Np, N₁ = Submit Part D 15. ΑΣΦ Np, Nn= wwwwwww. VE ΑΣΦ 207 Pb Express your answers as integers. Enter your answers separated by a comma. ▸ View Available Hint(s) ? www. protons, neutrons ? protons, neutrons

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.