In Which of the following ionisation processes the bond energy increases and the magnetic behavior changes from paramagnetic to diamagnetic?
As we learnt in
Magnetic behavior of molecule -
If all the molecular orbitals in a molecule are doubly occupied, the substance is diamagnetic
- wherein
However if one or more molecular orbital are singly occupied it is paramagnetic e.g. O2
Bond strength -
The energy required to break one mole of bonds of particular type in gaseous state is called bond energy or bond strength.
- wherein
The same amount of energy is released in the formation of one mol of particular bond.
Bond energy Bond order
Electronic config of
B.O =
Electronic config of
B.O =
Since there are no unpaired electrons in NO+ as there are in NO, NO+ is diamagnetic while NO is paramagnetic due to 1 unpaired electron.
Incorrect
Option 2)Incorrect
Option 3)Incorrect
Option 4)Correct