Write theatomic symbol (A/Z X) for each of the following isotopes. a. Z=8, number of neutrons=9 b. the isotope of chlorine in which A=37 c. Z=27, A=60 d. number of protons =26. number of neutrons=31 e. the isotope of I wish a mass number of 131 f. z=3, number of neutrons=4

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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.