In the following transition metals, the maximum number of oxidation states are exhibited by
- chromium (Z = 24)
- manganese (Z = 25)
- iron (Z = 26)
- titanium (Z = 22)
The Correct Option is B
Solution and Explanation
Other metals show the following oxidation states $Cr = +2 +3 +4 +5 +6 , Fe = +2 +3$ and $Ti = +2 +3 + 4$
Top Questions on d -and f -Block Elements
- Which of the following is the correct electron configuration for the ion \(\text{Fe}^{3+}\)?
- MHT CET - 2025
- Chemistry
- d -and f -Block Elements
- The percentage of Cr(III) in Ruby is
- KEAM - 2025
- Chemistry
- d -and f -Block Elements
- The bond angle of Cr-O-Cr bond in dichromate ion is
- KEAM - 2025
- Chemistry
- d -and f -Block Elements
- The most common oxidation states of chromium are
- KEAM - 2025
- Chemistry
- d -and f -Block Elements
- What is the magnetic moment of a divalent ion with three unpaired electrons?
- KEAM - 2025
- Chemistry
- d -and f -Block Elements
Questions Asked in NEET exam
- In some appropriate units, time (t) and position (x) relation of a moving particle is given by \(t = \alpha x^2 + \beta x\). The acceleration of the particle is :
- NEET (UG) - 2025
- Kinematic equations for uniformly accelerated motion
The current passing through the battery in the given circuit, is:
- NEET (UG) - 2025
- Current electricity
- Consider the diameter of a spherical object being measured with the help of a Vernier Callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least count in the M.S. is 0.1 cm and the zero of V.S. is at -0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is \(M = 5\) cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is:
- NEET (UG) - 2025
- Measurement of length
Which are correct?
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutic drugs are used to kill non-cancerous cells.
C. \( \alpha \)-interferon activates the cancer patients' immune system and helps in destroying the tumour.
D. Chemotherapeutic drugs are biological response modifiers.
E. In the case of leukemia, blood cell counts are decreased.
Choose the correct answer from the options given below:AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
- NEET (UG) - 2025
- Electromagnetic Induction and Inductance
Concepts Used:
D and F Block Elements
The d-block elements are placed in groups 3-12 and F-block elements with 4f and 5f orbital filled progressively. The general electronic configuration of d block elements and f- block elements are (n-1) d 1-10 ns 1-2 and (n-2) f 1-14 (n-1) d1 ns2 respectively. They are commonly known as transition elements because they exhibit multiple oxidation states because of the d-d transition which is possible by the availability of vacant d orbitals in these elements.
They have variable Oxidation States as well as are good catalysts because they provide a large surface area for the absorption of reaction. They show variable oxidation states to form intermediate with reactants easily. They are mostly lanthanoids and show lanthanoid contraction. Since differentiating electrons enter in an anti-penultimate f subshell. Therefore, these elements are also called inner transition elements.
Read More: The d and f block elements