How does 5d orbital of Au atom counts 10 electrons ? I count only 9?
回答 (1)
2017-01-31 12:48 am
The electronic configuration for Au : [Xe] 4f¹⁴ 5d¹⁰ 6s¹
but NOT Au : [Xe] 4f¹⁴ 5d⁹ 6s²
This is because when 5d subshell has 10 electrons, the 5d subshell attains extra stability of completely-filled subshell.
Due to the same reason, similar cases also happen for other elements such as copper.
The electronic configuration for Cu : [Ar] 3d¹⁰ 4s¹
but NOT Cu : [Xe] 3d⁹ 4s²
but NOT Au : [Xe] 4f¹⁴ 5d⁹ 6s²
This is because when 5d subshell has 10 electrons, the 5d subshell attains extra stability of completely-filled subshell.
Due to the same reason, similar cases also happen for other elements such as copper.
The electronic configuration for Cu : [Ar] 3d¹⁰ 4s¹
but NOT Cu : [Xe] 3d⁹ 4s²
收錄日期: 2021-04-18 16:03:36
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