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Q.
Which of the following statements about the monomer and dimer of $NO_{2}$ is/are not true?
UPSEEUPSEE 2011Chemical Bonding and Molecular Structure
Solution:
$NO _{2}$ is an odd electron $(7+8+8=23$ electrons) species with the odd electron present on the $N$ atom. Hence, it is paramagnetic. In order to become more stable, the two odd electrons pair up to form a dimer, which is diamagnetic.
