Question:
Assertion (A): Actinoids show wide range of oxidation states.
Reason (R): Actinoids are radioactive in nature.
Assertion (A): Actinoids show wide range of oxidation states.
Reason (R): Actinoids are radioactive in nature.
Reason (R): Actinoids are radioactive in nature.
Show Hint
When studying the actinoids, focus on their ability to exhibit multiple oxidation states, which is a key feature of their chemistry.
Updated On: Jan 14, 2026
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Actinoids exhibit a wide range of oxidation states due to their ability to lose electrons from the 5f, 6d, and 7s orbitals. While it is true that actinoids are radioactive, this property is not responsible for the wide range of oxidation states they can adopt. Therefore, Reason (R) is true, but it is not the correct explanation for Assertion (A).
Was this answer helpful?
1
0
Top Questions on Chemical Kinetics
- Correct statements regarding Arrhenius equation among the following are:
Factor \(e^{-E_a/RT}\) corresponds to fraction of molecules having kinetic energy less than \(E_a\).
At a given temperature, lower the \(E_a\), faster is the reaction.
Increase in temperature by about \(10^\circ\text{C}\) doubles the rate of reaction.
Plot of \(\log k\) vs \(\dfrac{1}{T}\) gives a straight line with slope \(= -\dfrac{E_a}{R}\).
Choose the correct answer from the options given below:- JEE Main - 2026
- Chemistry
- Chemical Kinetics
- Decomposition of A is a first order reaction at T(K) and is given by \( A(g) \rightarrow B(g) + C(g) \).
In a closed 1 L vessel, 1 bar A(g) is allowed to decompose at T(K). After 100 minutes, the total pressure was 1.5 bar. What is the rate constant (in \( min^{-1} \)) of the reaction ? (\( \log 2 = 0.3 \))- JEE Main - 2026
- Chemistry
- Chemical Kinetics
- An organic compound undergoes first order decomposition. The time taken for decomposition to \(\dfrac{1}{8}\) and \(\dfrac{1}{10}\) of its initial concentration are \(t_{1/8}\) and \(t_{1/10}\) respectively. Find the value of \[ \frac{t_{1/8}}{t_{1/10}}\times10 \] (Given: \(\log 2 = 0.3\))
- JEE Main - 2026
- Chemistry
- Chemical Kinetics
Consider the following compounds. Arrange these compounds in a n increasing order of reactivity with nitrating mixture. The correct order is :
- JEE Main - 2026
- Chemistry
- Chemical Kinetics
- At $27^\circ\text{C}$, in presence of a catalyst, activation energy of a reaction is lowered by $10\,\text{kJ mol}^{-1}$. The logarithm of the ratio $\dfrac{k(\text{catalysed})}{k(\text{uncatalysed})}$ is ___.
(Consider that the frequency factor for both the reactions is same)
- JEE Main - 2026
- Chemistry
- Chemical Kinetics
View More Questions
Questions Asked in CBSE CLASS XII exam
- Suppose, the value of Average Propensity to Consume (APC) is 0.8 and National Income is ₹ 4,000 crores, the value of saving would be ₹ ____ crores. (Choose the correct option to fill up the blank)
- CBSE CLASS XII - 2025
- Income and Employment
- Surface area of a balloon (spherical), when air is blown into it, increases at a rate of 5 mm²/s. When the radius of the balloon is 8 mm, find the rate at which the volume of the balloon is increasing.
- Two wires of the same material and the same radius have their lengths in the ratio 2:3. They are connected in parallel to a battery which supplies a current of 15 A. Find the current through the wires.
- CBSE CLASS XII - 2025
- Current electricity
- (a) Briefly explain Einstein’s photoelectric equation.
(b) Four metals with their work functions are listed below:
K = 2.3 eV, Na = 2.75 eV, Mo = 4.17 eV, Ni = 5.15 eV.
The radiation of wavelength 330 nm from a laser source placed 1 m away, falls on these metals.
Which of these metals will not show photoelectric emission?
What will happen if the laser source is brought closer to a distance of 50 cm?- CBSE CLASS XII - 2025
- Photoelectric Effect
- Differentiate $2\cos^2 x$ w.r.t. $\cos^2 x$.
- CBSE CLASS XII - 2025
- Derivatives
View More Questions