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Chemistry · Unit 1 · Properties and structure of atoms · Atomic structure

Apply the nuclear symbol notation M𝑍 𝐴 to determine the number of protons, neutrons and electrons in atoms, ions and isotopes.

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Question 1

The nuclear symbol for an ion is shown below:\n\n$$^{65}_{30}\text{Zn}^{2+}$$\n\nHow many neutrons are present in this zinc ion?

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Question 2

The nuclear symbol for a chlorine isotope is \(\ce{^{37}_{17}Cl^{-}}\). Determine the number of neutrons and the number of electrons in this ion.

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Apply the Aufbau principle, Hund’s rule and the Pauli exclusion principle to write electron configurations for atoms and ions up to Z = 36.
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