Probably you want the electron cofiguration of uranium: [Rn]5f36d17s2
The ion U4+ lost four electrons.
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The noble gas electron configuration for Uranium (IV) ion (U^4+) is [Xe] 4f^14 5d^10. This means that the electrons from the noble gas Xenon are included, along with 14 electrons in the 4f orbital and 10 electrons in the 5d orbital for a total of 24 electrons.
When phosphorus achieves a noble gas configuration, it gains three electrons to become the phosphide ion (P³⁻). This allows it to achieve the stable electron configuration of a noble gas, similar to argon.
The charge of a sulfide ion that is isoelectric with its nearest noble gas (argon) is -2. This means that the sulfide ion has gained two electrons in order to have the same electron configuration as the noble gas.
The noble gas that is isoelectronic with an aluminum ion is neon. Both the aluminum ion (Al^3+) and neon have 10 electrons.
Oxide ion (O²⁻) has the electron configuration of a noble gas neon (Ne), which is 1s² 2s² 2p⁶.
The noble gas that is isoelectronic with the oxide ion O2 is neon (Ne). Both the oxide ion O2 and the neon atom have 10 electrons.