d and f Block ElementshardNUMERICAL

A neutral atom of Uranium () possesses the atomic number . What is the theoretical maximum oxidationd and f Block Elements Chemistry Question

Question

A neutral atom of Uranium ($U$) possesses the atomic number $92$. What is the theoretical maximum oxidation state it can stably exhibit in compounds like its hexafluoride ($UF_6$) or the uranyl ion ($UO_2^{2+}$)?

Answer: 6

💡 Solution & Explanation

Uranium ($Z=92$) has a ground state electronic configuration of $[Rn] 5f^3 6d^1 7s^2$. By utilizing all 6 of these valence electrons in bonding, it can reach an absolute maximum oxidation state of $+6$, as prominently seen in compounds like $UF_6$ and the highly stable $UO_2^{2+}$ ion.

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