Multiple Choice
In the simplified electron configuration notation (using noble-gas core), which electron configuration correctly represents neutral silver, Ag?
9. Electrons in Atoms and the Periodic Table
The Electron Configuration: Exceptions (Simplified)
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A comparison of the electron configurations of palladium (Pd) and silver (Ag) indicates that:
A
Ag has 2 more d electrons and the same number of s electrons as Pd.
B
Ag has 1 more d electron and the same number of s electrons as Pd.
C
Ag has 2 more d electrons and 1 less s electron than Pd.
D
Ag has 1 more d electron and 1 less s electron than Pd.
E
Ag has 1 more d electron and 1 more s electron than Pd.
Verified step by step guidance1
Identify the atomic numbers of palladium (Pd) and silver (Ag). Palladium has an atomic number of 46, and silver has an atomic number of 47.
Write the electron configuration for palladium (Pd). The electron configuration is [Kr] 4d^10 5s^0, where Kr is the noble gas preceding Pd.
Write the electron configuration for silver (Ag). The electron configuration is [Kr] 4d^10 5s^1.
Compare the electron configurations of Pd and Ag. Notice that both have the same number of d electrons (10), but Ag has one more s electron than Pd.
Based on the comparison, determine the correct statement. Ag has 1 more s electron and the same number of d electrons as Pd.
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