check my answer please

1. The covalent bonds characterizing different functional groups have different characteristic absorption frequencies. () 2. The larger wavenumbers (shorter wavelengths) are associated with higher frequencies and lower higher energy. (X)E=hV=CV 3. The stretching vibrations require more energy and show absorption bands in the higher lower wavenumber/frequency region. (X) 4. The intensity of an absorption band depends on the polarity of the bond, and a bond with higher polarity will show a more intense absorption band. The intensity also depends on the number of bonds responsible for the absorption, and an absorption band with more bonds involved has a higher intensity. 5. The region with the lower frequency 4001400cm1 in the IR spectrum is called the fingerprint region. (x)6001400cm1 6. The frequency of an absorption band in an IR spectrum depends only on type of vibration. (X) 7. The frequency of an absorption band in an IR spectrum decreases as atomic weight increase. ( ) 8. In the character table, the symbol "A" indicates that the representation is doublydegenerate. (X) 9. A single atom has only one vibration. (X) 10. The vibrational spectra arise when the molecule possesses changing dipole moment. 11. If the paring energy is greater than crystal field splitting energy, , then electrons will move to a higher energy orbital because it takes less energy. () 12. According to selection rule, spin multiplicity must not change