Objectives I. Determine the number of subatomic particles of an atom given its mass number and atomic number, and vice versa Identify the element based on its atomic number Calculate the atomic mass of an element Complete the table based on the information provided. Number of Neutrons 150 Atomic Number 97 15 Mass Number 32 258 Number of Protons 22 22 Number of Isotopic Electrons Symbol Pd-106 U-235 Name of the Element mendelevium

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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.