Write the atomic symbol (X) for each of the isotopes described below. a. number of protons = 27. number of neutrons = 31 b. the isotope of boron with mass number 10 c. Z - 12, A= 23

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A: Given-> M1= 27.98 u.        P1=0.882% M2=28.98u.           P2=0.018% M3=29.97 u.

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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.