Answer:
The atomic number of Au is 79.
Therefore, its configuration is:
1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d1
¹⁰5s²5p⁶4f¹⁴5d¹⁰6s¹ or [Xe]4f¹⁴5d¹⁰6s¹
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