Question:
Which of the following transition elements exhibits the highest oxidation state?
Which of the following transition elements exhibits the highest oxidation state?
Show Hint
Remember that for 3d transition metals, the maximum oxidation state increases from $\text{Sc}$ (+3) to $\text{Mn}$ (+7), after which it decreases because d-electrons start pairing up and become less available for bonding.
Updated On: May 31, 2026
- Mn
- Fe
- Cr
- Ti
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Concept
Transition metals can exhibit multiple oxidation states due to the presence of d-orbitals. The highest possible oxidation state for a transition metal is determined by the number of electrons in its outermost shell and the availability of unpaired d-electrons.
Step 2: Meaning
Oxidation state refers to the hypothetical charge an atom would have if all bonds to atoms of different elements were 100% ionic. For transition metals, this varies widely due to their ability to lose different numbers of electrons from both the ns and (n-1)d subshells.
Step 3: Analysis
To determine which element exhibits the highest oxidation state among Mn, Fe, Cr, and Ti, we look at their valence configurations: Titanium ($\text{Ti}$) has an electronic configuration of $[\text{Ar}] 4s^2 3d^2$. The maximum possible oxidation state is +4.
Iron ($\text{Fe}$) has an electronic configuration of $[\text{Ar}] 4s^2 3d^6$. Although it has 8 valence electrons, it rarely exceeds +3 or +6 in unstable ferrates due to paired d-electrons.
Chromium ($\text{Cr}$) has an electronic configuration of $[\text{Ar}] 4s^1 3d^5$. It can lose all 6 valence electrons to exhibit a maximum oxidation state of +6.
Manganese ($\text{Mn}$) has an electronic configuration of $[\text{Ar}] 4s^2 3d^5$. It has 7 valence electrons available for bonding.
Step 4: Conclusion
By losing all 7 of its valence electrons ($4s$ and $3d$), manganese can achieve a maximum oxidation state of +7 (e.g., in $\text{KMnO}_4$ or $\text{MnO}_4^-$). This is the highest among the given options.
Final Answer: (A)
Was this answer helpful?
0
0
Top AP EAPCET Chemistry Questions
- The four quantum numbers of the valence electron of potassium are :
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
- In which of the following the election gain enthalpy of elements is correctly arranged?
- The radii of $ \text{F,}{{\text{F}}^{-}}\text{O} $ and $ {{\text{O}}^{2-}} $ are in the order
- Which of the following has the highest first ionization potential?
View More Questions
Top AP EAPCET Questions
- A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is
- The four quantum numbers of the valence electron of potassium are :
- A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )
- Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
View More Questions