Q132 / 200 · MHT CET - Medical 2026 (23 April Shift 2) · Chemistry
Identify the highest oxidation state exhibited by plutonium ($Z = 94$).
- A$+6$
- B$+4$
- C$+5$
- Correct answerD$+7$
Solution
Plutonium ($Z = 94$) is an actinoid element with the electronic configuration $[Rn] 5f^6 7s^2$.
Due to the comparable energies of the $5f$, $6d$, and $7s$ orbitals, actinoids can exhibit a wide range of oxidation states. Plutonium exhibits oxidation states of $+3, +4, +5, +6$, and $+7$.
Therefore, the highest oxidation state exhibited by plutonium is $+7$.
Answer: $+7$
Due to the comparable energies of the $5f$, $6d$, and $7s$ orbitals, actinoids can exhibit a wide range of oxidation states. Plutonium exhibits oxidation states of $+3, +4, +5, +6$, and $+7$.
Therefore, the highest oxidation state exhibited by plutonium is $+7$.
Answer: $+7$
Hence, the correct answer is option: 'D'.