Paramagnetic behaviour of transition elements is due to the presence of:
Correct answer: B. Unpaired electrons
- A. s electrons
- B. Unpaired electrons
- C. Paired electrons
- D. Outer d electrons
Explanation
Option B is correct as paramagnetism (the ability of a material to be weakly attracted to a magnet due to its magnetic field, which induces an internal magnetic field of the material) is caused by the presence of "unpaired electrons", with each electron having a magnetic moment associated with its spin angular momentum and orbital angular momentum.
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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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