The paramagnetic character of a substance is due to:
Correct answer: C. Unpaired electrons in atom or molecule
- A. Bond pairs of electrons
- B. Lone pairs of electrons
- C. Unpaired electrons in atom or molecule
- D. Paired electrons in valence shells of electrons
Explanation
Paramagnetism is due to the presence of unpaired electrons in the material, so most atoms with incompletely filled atomic orbitals are paramagnetic.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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