Xenon is a noble gas with an atomic number of 54. Its atomic structure consists of 54 electrons, 54 protons, and 74 neutrons. The nucleus of a xenon atom contains 54 positively charged protons and 74 neutral neutrons, while the electrons are arranged in concentric shells around the nucleus. The electronic configuration of xenon is [Kr] 4d¹⁰ 5s² 5p⁶, which indicates that xenon has a filled outermost shell with eight electrons (two 5s electrons and six 5p electrons), similar to other noble gases. The 4d subshell is also complete with ten electrons. Due to its stable electron configuration, xenon is highly unreactive and forms very few chemical compounds.