According to the activity series, all of the following single replacement reactions occur EXCEPT-
A 3 Mg (s) + 2 AI(NO3)2 (aq) → 3 Mg(NO3)2 (aq) + 2 Al (s)
B 2 Fe (s) + 3 Pb(NO3)2 (aq) → 2 Fe(NO3)2 (aq) + 3 Pb (s)
C Zn (s) + Cu(NO3)2 (aq) → Zn(NO3)2 (aq) + Cu (s)
D 3 Ag (s) + CO(NO3)3 (ag) → 3 AgNO3 (aq) + Co (s)

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

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