MasteringChemistry: Chapter 8 HW A https://session.masteringchemistry.com/myct/i
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Question
MasteringChemistry: Chapter 8 HW A https://session.masteringchemistry.com/myct/itemView?offset-next&assignmentProblemID-90459208; hapter 8 HW Exercise 8.30 Exercise 8.30 Part A How is the electron configuration of an anion different from that of the corresponding neutral atom? O add the number of electrons required by the magnitude of the charge of the anion O subtract the number of electrons required by the magnitude of the charge of the anion the electron configurations of an anion and the corresponding neutral atom are the same Submit My Answers Give Up Part B How is the electron configuration of a cation different? add the number of electrons required by the magnitude of the charge of the cation subtract the number of electrons required by the magnitude of the charge of the cation the electron configurations of an cation and the corresponding neutrai atom are the same Submit My Answers Give UpExplanation / Answer
1. Ans : add the number of electrons required by the magnitude of the charge of the anion.
Ex: Chlorine atom : Cl
No of electrons = 17
No of protons = 17
Chloride ion: Cl-
No of electrons = 18
No of protons = 17
Oxide ion : O-2
No of electrons = 10
No of protons = 8
2. Answer :
Subtract electrons required by the magnitude of the charge of the cation.
Example : sodium atom : Na
No of electrons = 11
No of protons = 11
Sodium ion : Na+
No of electrons = 10
No of protons = 11
Aluminium atom : Al
No of electrons = 13
No of protons = 13
Aluminium ion : Al+3
No of electrons = 10
No of protons = 13
Note : Always the number of protons constant with atomic number. Electrons only with respect to the atoms and the ions.