In moving from left to right in any transition series, the number of unpaired electrons increases up to groups
Correct answer: C. VB and VIB
- A. IIB and IIIB
- B. IVB and VB
- C. VB and VIB
- D. VIB and VIIB
Explanation
In moving from left to right in any transition series, the number of unpaired electrons increases up to groups VB and VIB, after that pairing takes place and number of unpaired electrons goes on decreasing until it becomes zero at group IIB.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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