[References] Americium-241 is an isotope of americium used in household smoke detectors. This element has 11 known isotopes, none of which occurs in nature, but must be made in the laboratory. a. Give the number of protons in an atom of the isotope americium-242. Number of protons D b. Give the number of electrons in an atom of the isotope americium-242. Number of electrons= c. Give the number of neutrons in an atom of the isotope americium-242. Number of neutrons = Submit Answer Try Another Version 1 item attempt remaining

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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.