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Statement 1: Spectral lines are never o...

Statement 1: Spectral lines are never obtained when electron de-excites from `d_(xy)` to `d_(yz)` because they are degenerate.
Statement 2:When ligands approach central metal ion its d-orbitals split into two sets.

A

Statement-1 is Ture, Statement 2 is True, Statemnet -2 is correct explanation for Statement -1

B

Statement -1 is Ture, Statement -2 is True, Statement -2 is NOT a correct explanation for Statement -1

C

Statement -1 is true. Statement -2 is false

D

Statement -1 is false, Statement -2 is True

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements and determine their validity, let's break down the concepts involved step by step. ### Step 1: Understanding Statement 1 **Statement 1:** Spectral lines are never obtained when an electron de-excites from `d_(xy)` to `d_(yz)` because they are degenerate. - **Explanation:** In the context of d-orbitals, "degenerate" means that the orbitals have the same energy level. The `d_(xy)`, `d_(yz)`, and `d_(xz)` orbitals are indeed degenerate in a free metal ion. When an electron transitions between degenerate orbitals, there is no change in energy. Since spectral lines are produced due to energy changes (absorption or emission of light), no spectral line will be observed for this transition. Therefore, Statement 1 is **true**. ### Step 2: Understanding Statement 2 **Statement 2:** When ligands approach the central metal ion, its d-orbitals split into two sets. - **Explanation:** This statement refers to the crystal field theory, which describes how the presence of ligands affects the energy levels of d-orbitals in transition metal complexes. When ligands approach a central metal ion, the d-orbitals split into two sets due to the electrostatic repulsion between the electrons in the d-orbitals and the electrons in the ligands. In an octahedral field, for example, the d-orbitals split into two groups: the lower energy set (t2g) and the higher energy set (eg). Thus, Statement 2 is also **true**. ### Conclusion Both statements are correct. However, they address different aspects of d-orbital behavior in transition metal complexes. Therefore, the answer to the question is that both statements are true. ### Final Answer Both Statement 1 and Statement 2 are true. ---
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