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#d-block

4 public questions tagged with this topic.

CHEMISTRY

Which of the following is a characteristic of d-block elements?

d-block elements (transition metals) often exhibit variable oxidation states due to the availability of (n-1)d electrons. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.

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CHEMISTRY

Which of the following ions has the electronic configuration 3d³ ?

Given: Which of the following ions has the electronic configuration 3d³ ? These values define the system as per NCERT data. Formula: V (Z = 23) has 3d³ 4s². This is the standard NCERT relation for this phenomenon. Substitution & Calculation: For V^{2+, 2 electrons from 4s are lost, leaving 3d³ . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Relevant Chemistry topic covering principles and examples as per NCERT.

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