Here's how to determine the number of electrons in the 4d subshell of xenon in its ground state:

1. Electronic Configuration of Xenon:

* Xenon (Xe) has an atomic number of 54, meaning it has 54 electrons.

* The electronic configuration of xenon is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶.

2. Identifying the 4d Subshell:

* The 4d subshell is highlighted in the electronic configuration above.

3. Number of Electrons in the 4d Subshell:

* The superscript "10" next to the "4d" indicates that there are 10 electrons in the 4d subshell of xenon.

Therefore, there are 10 electrons in the 4d subshell of xenon in its ground state.