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NCERT Solutions for Class 12 Help.html Chemistry I Chapter 8 The D-And-f-Block Elements

The D-And-f-Block Elements Here is the CBSE Help.html Chapter 8 for Class 12 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 12 Help.html The D-And-f-Block Elements Chapter 8 NCERT Solutions for Class 12 Help.html The D-And-f-Block Elements Chapter 8 The following is a summary in Hindi and English for the academic year 2025-26. You can save these solutions to your computer or use the Class 12 Help.html.

Question 1
CBSEENCH12006973
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Silver atom has a completely filled d orbitals (4d10) in its ground state. How can you say that it is a transition element?

Solution
Ag has a completely filled 4d orbital (4d10 5s1) in its ground state. Now, silver displays two oxidation states (+1 and +2). In the +1 oxidation state, an electron is removed from the s-orbital. However, in the +2 oxidation state, an electron is removed from the d-orbital. Thus, the d-orbital now becomes incomplete (4d9). Hence, it is a transition element. wherein it will have incompletely filled d-orbitals (4d), hence a transition metal.

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